The opinion of the court was delivered by
Temporarily Assigned. At issue
in this case is the constitutionality of the sentencing scheme of the blew Jersey murder statute, N. J. S. A. 2A:113-3 and N. J. S. A. 2A:113-4, as judicially altered in State v. Funicello, 60 N. J. 60 (1972) (“Funicello III”), cert. den. sub nom. New Jersey v. Presha, 408 U. S. 942, 92 S. Ct. 2849, 33 L. Ed. 2d 766 (1972). Defendant asks the Court to find: (1) that under United States v. Jackson, *382390 U. S. 570, 88 S. Ct. 1209, 20 L. Ed. 2d 138 (1968), the sentencing scheme of the act impermissibly infringes upon an accused’s Fifth Amendment right not to plead guilty and his Sixth Amendment right to a jury trial; and (2) that, apart from the Jaclcson rule, the scheme deprives an accused of the equal protection of the laws.
In view of the limitation of the issues herein by our order of certification, the factual background may be capsulated. On May 11 and 13, 1972 fires occurred at a Newark multi-family dwelling. A visitor at the premises died from smoke inhalation because of the second fire. Defendant confessed to setting both fires to obtain revenge against his landlord. On April 10, 1973 a jury acquitted defendant of arson in relation to the May 11 fire but it found him guilty of arson in connection with the May 13 fire and of murder of the visitor. The murder charge had been tried on a felony murder theory. Defendant was sentenced to life imprisonment for the murder and given a concurrent five to seven year prison sentence for the arson.
On appeal the Appellate Division, in an unreported opinion, affirmed the murder conviction but vacated that for arson on grounds of merger. We granted certification but expressly “limited to the question of the validity of the mandatory life sentence upon a jury conviction for murder.” 69 N. J. 447 (1976).
I
Alleged Infringement upon Fifth Amendment and Sixth Amendment Rights.
The basic issue before us is whether the decision in United States v. Jackson, supra, which held unconstitutional the death penalty provision of the Federal Kidnapping Act under the sentencing scheme of the act, condemns as invalid our murder sentencing scheme as revised by this Court after the statute, with a provision for a death penalty, was held unconstitutional by the United States Supreme Court in Funi *383 cello v. New Jersey, 403 U. S. 948, 91 S. Ct. 2278, 29 L. Ed. 2d 859 (1971) (“Funicello II”) Comprehension of the opposing views in the case requires our outlining the history of the litigation over the validity of the murder statute before and after its judicial recasting in Funicello III.
A
Prior to Funicello III our statutes1 concerning pleading and sentencing for murder read as follows:
N. J. S. A. 2A:113-3
In no case- shall the plea of guilty be received upon any indictment for murder, and if, upon arraignment, such plea is offered, it shall be disregarded, and the plea of not guilty entered, and a jury, duly impaneled, shall try the case.
Nothing herein contained shall prevent the accused from pleading non vult or nolo contendere to the indictment; the sentence to be imposed, if such plea be accepted, shall be either imprisonment for life or the same as that imposed upon a conviction of murder in the second degree.
N. J. S. A. 2A:113-4
Every person convicted of murder in the first degree, his aiders, abettors, counselors and procurers, shall suffer death unless the jury shall by its verdict, and as a part thereof, upon and after the consideration of all the evidence, recommend life imprisonment, in which case this and no greater punishment shall be imposed.
Every person convicted of murder in the second degree- shall suffer imprisonment for not more than 30 years.
Judgments of death were pronounced under those statutes upon Leo R. Forcella and Victor R. Eunicello and affirmed on direct appeal in State v. Forcella, 35 N. J. 168 (1961), cert. den. 369 U. S. 866, 82 S. Ct. 1035, 8 L. Ed. 2d 86 (1962) and State v. Funicello, 49 N. J. 553 (1967) (“Funicello I”), cert. den. 390 U. S. 911, 88 S. Ct. 837, 19 L. Ed. 2d 882 (1968). Post-conviction proceedings were brought by both, *384and before their final disposition the United States Supreme Court decided United States v. Jackson, supra 390 U. S. 570, 88 S. Ct. 1209, 20 L. Ed. 2d 138.
Jackson involved a death sentence under the Federal Kidnapping Act. That statute provided that kidnapping and interstate transportation of the victim should under specified circumstances be punished by death if the verdict of the jury should so recommend or by imprisonment for any term of years or for life if the death penalty was not imposed. As the statute was construed, the death penalty could not be imposed upon a defendant who waived jury trial or pleaded guilty. The Supreme Court held the death penalty provision invalid, but severable from the remainder of the act. It reasoned that since a defendant could assuredly avoid the death penalty only by pleading guilty or proceeding to trial before a judge, he was “needlessly encourage[d]” to waive his constitutional rights not to incriminate himself, as by a plea of guilt (Fifth Amendment) and to have a jury trial should he plead not guilty (Sixth Amendment). 390 U. S. at 583, 88 S. Ct. 1209. While recognizing the Legislature’s legitimate interest in permitting a jury to mitigate the rigors of capital punishment, the Court felt that goal could not be pursued by “penalizing those defendants who plead not guilty and demand jury trial”. Id. at 582, 88 S. Ct. at 1217. It cited state statutes which make the jury the arbiter of capital punishment no matter how the defendant’s guilt is determined. Ibid.
Forcella, Funicello and others similarly situated brought the Jackson holding to the attention of the New Jersey courts in their post-conviction proceedings, arguing that it was direct authority for the invalidity of the death penalty provision in our murder statute in that only upon a trial did a defendant risk a verdict of death, not by offer and acceptance of a plea of non vult. Thus there existed the same needless “chilling”, as in Jackson, of the right to contest guilt and to have a jury at the trial of the issue. In an opinion by Chief Justice Weintraub for a majority of the Court, the argu*385ment was rejected, Jackson being distinguished. State v. Forcella, 52 N. J. 263 (1968). It was pointed out that our statutory scheme differed from that in Jackson because a defendant could not be -tried by a judge but only before a jury, and therefore the Sixth Amendment claim was without merit. Id. at 270-272. The purpose of the provision was “humane” and not a “needless” discouragement of the right to contest guilt, as in Jackson, and thus the Eifth Amendment was not offended. Id. at 280.
Justices Jacobs and Hall dissented. They concluded that Jackson compelled the elimination of the death penalty from the New Jersey sentencing scheme but that the statute could be rehabilitated by substituting life imprisonment therefor, without the necessity of scrapping the defendant’s option to offer to plead non vult and be allowed the potential of a lesser penalty. 52 N. J. at 294-302.
On petition for certiorari the United States Supreme Court summarily, and without argument, reversed the Forcella holding three years later in a brief memorandum whose substantive content was confined to the statement:
Judgment, insofar as it imposes the death sentence, reversed and ease remanded to the Supreme Court of New Jersey for further proceedings. Funicello v. New Jersey, 403 U. S. 948, 91 S. Ct. 2278, 29 L. Ed. 2d 859 (1971) (“Funicello II”).
The only explanation given for the ruling was the citation of Witherspoon v. Illinois, 391 U. S. 510, 88 S. Ct. 1770, 20 L. Ed. 2d 776 (1968), and similar eases2 and of the Jackson case.
Upon remand to this Court, in Funicello III, supra (60 N. J. 60), the Court “accept[ed] the conclusion that the *386United States Supreme Court has declared the death penalty to be unconstitutional under our statute”. Id. at 67. Considering the provision for the death penalty severable from the statute, the Court ordered all death sentences vacated, and it directed that all pending or -future indictments for murder be prosecuted on the basis that upon the jury’s verdict of murder in the first degree the penalty should be life imprisonment. Pleas to an indictment for murder were to continue to be governed by N. J. S. A. 2A:113-3. Id. at 67-68. In effect, the Court adopted the position of the dissenting Justices in State v. Forcella, supra.
The United States Supreme Court denied certiorari to review that determination. New Jersey v. Presha, supra 408 U. S. 942, 92 S. Ct. 2849, 33 L. Ed. 2d 766.
Viewed in relation to the rationale of Jackson, the following possibly pertinent differences are apparent between the sentencing scheme under the federal kidnapping statute dealt with in Jackson and that of our present statute,3 as recast by our courts: (1) there was a possibility of a death penalty after conviction under the federal act; only life imprisonment under ours; ,(2) the maximum punishment after conviction under the federal act was greater than that upon a plea of guilt; the máximums are the same under our act; and (3) trials by either judge or jury were available under the federal act, with the possibility of the maximum penalty (death) only when the trial was with a jury; under our statute a trial can be only by jury.
The State contends that differences (1) and (2) are each sufficient to distinguish our statute from the federal one and to justify a conclusion that ours imposes no “needless” burden on the defendant’s Fifth Amendment rights, such as prohibited by Jackson. It also argues that difference (3) precludes the conclusion of infringement upon Sixth Amend*387ment rights. The defendant argues that the substantial difference in potential minimum sentences between that upon conviction after trial and that upon a plea of non vult under our statute is such as to render operative the rationale of Jackson insofar as infringement upon Eifth Amendment rights is concerned; and, moreover, that any impermissible burden on the option of the defendant to go to trial at all necessarily also burdens the Sixth Amendment right to have a jury trial.
As we view the basic underlying question posed by defendant’s contention, it is whether the doctrine of Jackson constitutionally precludes a statutory sentencing scheme for murder wherein provision for a fixed sentence (less than death) on a conviction may co-exist with one for the taking of a plea of non vult (or guilt) with the possibility of the sentencing court imposing a substantially lesser sentence. The defendant responds to that question in the affirmative. He regards any substantial statutory inducement to plead rather than go to trial as ipso facto invalid. Our study of the cases, particularly decisions of -the United States Supreme Court subsequent to Jackson, satisfies us that the correct conclusion is to the contrary and that our present statute is unexceptionable on either Eifth or Sixth Amendment'grounds.
B
The Sixth Amendment problem need not long detain us. In Jackson, the right to a jury trial was implicated because trial before a judge rather than a jury assured immunity from a death sentence. If the contrast between one method of trial involving the possibility of death (jury trial) and another free from it imposes an intolerable and needless pressure on the defendant to choose the latter, as held by Jackson, the right of trial by jury was of course compromised.4 But if, as *388under our statute, the defendant is triable only by jury, if at all, no invasion of the right of jury trial, as such, is apparent. State v. Forcella, supra, 52 N. J. at 269-270. If, however, because of the New Jersey statutory option of a defendant to tender a plea of non vult, which, if accepted, has the potential of a sentence substantially less than on conviction, of first degree murder, defendant has suffered intolerable and needless discouragement of his right to go to trial at all, then defendant has necessarily suffered infringement of both his Fifth and Sixth Amendment rights. But if, on the other hand, it is concluded that whatever discouragement is involved in the scheme is not an impermissible infringement on Fifth Amendment rights, so that the provision for a plea of non vult is valid, the Sixth Amendment question becomes moot. The latter issue is thus determinative of the entirety of the Jackson phase of the case.
0
We consider, first, the merits of the State’s position that the Jackson problem is satisfactorily resolved by the circumstance that under the statute the defendant is subject to the same maximum sentence whether he is convicted or pleads non vult — i. e., life imprisonment. It is pointed out that under the federal kidnapping act, by contrast, the potential maximum on a plea of guilty was less than on a conviction at a jury trial. The argument is that Jackson emphasized the certainty of avoidance by a plea of the potential maximum after a trial. The Appellate Division has upheld the State’s thésis. State v. Hubbard, 123 N. J. Super. 345, 351-352 (1973), certif. den. 63 N. J. 325 (1973); State v. Land. 124 N. J. Super. 303, 306 (1973). It has also so been held uniformly elsewhere. Commonwealth v. Hargrove, 434 Pa. 393, 254 A. 2d 22 (Sup. Ct. 1969); Sims v. Eyman, 405 F. *3892d 439 (9 Cir. 1969); State ex rel. Strickland v. Melton, 152 W. Va. 500, 165 S. E. 2d 90 (Sup. Ct. App. 1968); State v. Harper, 251 S. C. 379, 162 S. E. 2d 712 (Sup. Ct. 1968); cf. State v. Beal, 470 S. W. 2d 509 (Sup. Ct. Mo. 1971); Lyons v. Howard, 434 F. 2d 632 (6 Cir. 1970); People v. Coogler, 71 Cal. 2d 153, 77 Cal. Rptr. 790, 454 P. 2d 686 (Sup. Ct. 1969), cert. den. 406 U. S. 971, 92 S. Ct. 2417, 32 L. Ed. 2d 672 (1972).
We are not, however, persuaded that the point thus made is necessarily dispositive of the Jackson thrust. If the invariable or almost invariable practice were to accord the pleading defendant a substantially lesser sentence than that mandated on a conviction, the argument of pressure to avoid a trial by pleading guilty (aside from the other distinguishing considerations later to be discussed herein) would have logical merit even though the statute facially allowed imposition, on the taking of a plea, of the same penalty required in case of conviction after trial. See Commonwealth v. Hargrove, supra, 254 A. 2d at 24; cf. Roman v. Parrish, 328 F. Supp. 882 (E. D. Va. 1971). We need not pursue the point, however, as we are convinced, for reasons to be fully stated, that the Jachson case is not today authority for unconstitutionality where the maximum sentence imposable on conviction after trial is less than death; or, that if the principle is not automatically inapplicable in such a case, the New Jersey sentencing scheme is nevertheless valid notwithstanding the incidence of some encouragement or pressure on a defendant to plead guilty. We proceed with our reasons for those conclusions.
D
On its face, the opinion of the Court in Jachson left an ambiguity as to whether the gravamen of the holding was the overwhelmingly intimidating effect of a possible death penalty on the defendant’s decision to contest his guilt or, rather, the unaeceptability of any scheme which made the tender of a plea of guilt a more attractive prospect in terms of potential pun*390ishment than taking the chance of^an adverse verdict at a trial. A number of allusions in the opinion to the gravity of the defendant’s dilemma support the first view: “* * * the defendant’s assertion of the right to jury trial may cost him his life * * 390 U. S. at 572, 88 S. Ct. at 1211; “Under the Federal Kidnapping Act * * * the defendant who abandons the right to contest his guilt before a jury is assured that he cannot be executed; the defendant ingenuous enough to seek a jury acquittal stands forewarned that, if the jury finds him guilty and does not wish to spare his life, he will die. One problem is to decide whether the Constitution permits the establishment of such a death penalty, applicable only to those defendants who assert their right to contest their guilt before a jury.” Id. at 581, 88 S. Ct. at 1216 (emphasis added).
On the other hand, seeming to support the necessity of exact equivalence of potential punishment under either a plea or a contest, was the Court’s insistence that the evil it perceived was not that the federal statute necessarily “coerced” guilty pleas but that it “needlessly encourage[d]" them. 390 U. S. at 583, 88 S. Ct. 1209 (emphasis in the original). Thus, in responding to the Government’s contention that the jury option for life imprisonment rather than death was a laudable statutory effort “to mitigate the severity of punishment”, the Court said that objective could not be pursued by “penalizing those defendants who plead not guilty and demand jury trial”. Id. at 582, 88 S. Ct. at 1217. It pointed out that the permissible objective had been constitutionally achieved in Washington and California by statutes which left the choice between life imprisonment and capital punishment to a jury in every case, regardless of how defendant’s guilt had been determined. Ibid.
The issue for present purposes then boils down to the question whether there is a “needless” encouragement of guilty pleas in a statutory disparity between either maximum or minimum punishment on conviction and on a guilty plea when the death penalty is not involved. Dis*391senting in State v. Forcella, supra, Justices Jacobs and Hall clearly foresaw the issue we now face and answered the posed question in the negative. They concluded that the only repair of our statute required by Jackson was the substitution of life imprisonment for the death penalty. They disagreed with the majority, whose view it was, as expressed by Chief Justice Weintraub, that if our statute was vulnerable under Jackson, the indicated cure was to abolish the plea of non vult rather than the death penalty. 52 N. J. at 282, 283. Responding to the suggestion in the opinion of the majority that even if the death penalty were eliminated from the statute, it would still “involve a Jackson^-type difficulty in that one who stood trial would receive a life sentence for first-degree murder while a defendant whose non vult plea was accepted could receive a sentence for a term of years” (52 N. J. at 282), the dissenters said (Id. at 300-301):
The majority suggests that striking of the death penalty might still leave a “Jackson-type difficulty” in that a defendant who pleads non vult would receive life or a term of years whereas a defendant found guilty by a jury of first degree murder would necessarily receive life. But the jury might return a lesser verdict and, in any event, the inducement here would be insignificant when compared to the death penalty stricken in Jackson. The law has always been administered with pragmatic recognition of the fact that the difference between the death penalty and imprisonment entails more than matters of logic and degree. See State v. Laws, supra, 51 N. J. 494; cf. Meszaros v. Gransamer, 23 N. J. 179, 188 (1957) ; State v. Wolf, 46 N. J. 301, 308 (1966). Jackson was concerned solely with the grisly choice between a plea or waiver with an assurance of no death penalty, and a jury trial with the danger of a death penalty; it was not at all concerned with and did not mention the lesser inducements incident to the ordinary, though nonetheless troublesome, ‘plea bargaining.’ See Arnold, Law Enforcement — An Attempt at Social Dissection, 62 Yale L. J. 1 (1932) ; Note, Guilty Plea Bargaining, 112 U. Pa. L. Rev. 865, 878 (1964).
The soundness of the foregoing analysis of the parameters of Jackson has been fortified by subsequent decisions of the United States Supreme Court. In the first place, when Forcella came to be reviewed by the Supreme Court, it sum*392marily struck the death sentences of the several petitioners. Funicello II, supra. Significantly, the Court did not suggest that our statute also required revision to eliminate the disparity between potential penalties on a plea of guilty and after a trial. And when our Court thereafter recast the statute in Funicello III, supra, the Supreme Court denied review. New Jersey v. Presha, supra 408 U. S. 942, 92 S. Ct. 2849, 33 L. Ed. 2d 766.
Revealing light as to why the United States Supreme Court refused to disturb our statutory scheme beyond striking the death penalty is afforded by two of the opinions in the Brady trilogy of the Court announced May 4, 1970 (a date between the decision in Jackson, and the Court’s ruling in Funicello II, supra). Brady v. United States, 397 U. S. 742, 90 S. Ct. 1463, 25 L. Ed. 2d 747; McMann v. Richardson, 397 U. S. 759, 90 S. Ct. 1441, 25 L. Ed. 2d 763; Parker v. North Carolina, 397 U. S. 790, 90 S. Ct. 1458, 25 L. Ed. 2d 785.
Brady involved an attempt by a federal prisoner to be relieved of a plea of guilty under the same kidnapping statute as was involved in Jackson. He had faced the prospect of a possible death penalty if tried and convicted, and he urged that his plea of guilty was coerced by the same considerations which had led the Court in Jackson to declare the death penalty unconstitutional. The Court stated that the petitioner had “read far too much into the Jackson opinion.” 397 U. S. at 746, 90 S. Ct. at 1468. It said that while Jackson prohibited the imposition of the death penalty under the kidnapping act it had not fashioned a new standard for judging the validity of guilty pleas nor mandated a new application of the previous test that guilty pleas are valid if both voluntary and intelligent. Id. at 747, 90 S. Ct. 1463, 25 L. Ed. 2d 747. The coercive effect of the statute recognized in Jackson did not render the actual plea in Brady involuntary where it was tendered on advice of counsel and with the consciousness of the strength of the Gov*393ernment’s case against the defendant. Id. at 749-750, 90 S. Ct. 1463, 25 L. Ed. 2d 747.
What is of especial significance here is the Court’s obvious equation in Brady of the trial-plea differential in potential punishment under the federal statute with precisely similar situations in plea negotiations and agreements as generally practiced and generally approved in this country.5
The Court stated (397 U. S. at 751, 90 S. Ct. at 1470):
Insofar as the voluntariness of his plea is concerned, there is little to differentiate Brady from (1) the defendant, in a jurisdiction where the judge and jury have the same range of sentencing power, who pleads guilty because his lawyer advises him that the judge will very probably be more lenient than the jury; (2) the defendant, in a jurisdiction where the judge alone has sentencing power, who is advised by counsel that the judge is normally more lenient with defendants who plead guilty than with those who go to trial; (3) the defendant who is permitted by prosecutor and judge to plead guilty to a lesser offense included in the offense charged; and (4) the defendant who pleads guilty to certain counts with the understanding that other charges will be dropped. In each of these situations, as in Brady’s case, the defendant might never plead guilty absent the possibility or certainty that the plea will result in a lesser penalty than the sentence that could be imposed after a trial and a verdict of guilty. We decline to hold, however, that a guilty plea is compelled and invalid under the Fifth Amendment whenever motivated by the defendant’s desire to accept the certainty or probability of a lesser penalty rather than face a wider range of possibilities extending from acquittal to conviction and a higher penalty authorized by law for the crime charged.
(emphasis added).
It is quite obvious that if defendant’s present contention that the range of punishment, maximum and minimum, must constitutionally be the same on a conviction of crime after trial and upon tender and acceptance of a plea of guilty or non vult, a factor essential to successful plea negotiation *394is practically precluded from operation, i. e., “the defendant’s desire to accept the certainty or probability of a lesser penalty rather than face a wider range of possibilities extending from acquittal to conviction and a higher penalty authorized by law for the crime charged”. Brady, supra, 397 U. S. at 751, 90 S. Ct. at 1470. Defendant’s present argument would forbid a sentencing scheme which even renders possible a lesser punishment on a plea of guilt than on a conviction after trial. The damage to legitimate criminal-justice-administration considerations inherent in defendant’s position is clear from the Brady Court’s demonstration of the desirability of productive plea negotiations. It said (397 U. S. at 751-752, 90 S. Ct. at 1471) :
The issue we deal with is inherent in the criminal law and its administration because guilty pleas are not constitutionally forbidden, because the criminal law characteristically extends to judge or jury a range of choice in setting the sentence in individual cases, and because both the State and the defendant often find it advantageous to preclude the possibility of the maximum penalty authorized by lane. For a defendant who sees slight possibility of acquittal, the advantages of pleading guilty and limiting the probable penalty are obvious — his exposure is reduced, the correctional processes can begin immediately, and the practical burdens of a trial areoeliminated. For the State there are also advantages — the more promptly imposed punishment after an admission of guilt may more effectively attain the objectives of punishment; and with the avoidance of trial, scarce judicial and prosecutorial resources are conserved for those cases in which there is a substantial issue of the defendant’s guilt or in which there is substantial doubt that the State can sustain its burden of proof. It is this mutuality of advantage that perhaps explains the fact that at present well over three-fourths of the criminal convictions in this country rest on pleas of guilty, a great many of them no doubt motivated at least in part by the hope or assurance of a lesser penalty than might be imposed if there were a guilty verdict after a trial to judge or jury.
(emphasis added).
The Court concluded that acceptance of the defendant’s position (397 U. S. at 753, 90 S. Ct. at 1471):
* * * would require the States and Federal Government to forbid guilty pleas altogether, to provide a single invariable penalty for each crime defined by the statutes, or to place the sentencing func*395tion in a separate authority having no knowledge of the manner in which the conviction in each case was obtained.6
In the same year that Brady was decided, the Supreme Court rendered its opinion in North Carolina v. Alford, 400 U. S. 25, 91 S. Ct. 160, 27 L. Ed. 2d 162 (1970). In holding that a defendant (who entered a plea of guilty to second degree murder under a North Carolina murder statute with a death penalty provision for first degree murder similar to the federal kidnapping statute involved in Jaclcson) was not entitled to withdraw his guilty plea, even where at the time he gave the plea he said he was not guilty, the Court reiterated that it was not unconstitutional for a state to adopt a procedure under which a defendant would receive a lesser penalty in exchange for a guilty plea. It said (400 U. S. at 38-39, 91 S. Ct. at 168) :
Relying on United States v. Jackson, supra, Alford now argues in effect that the State should not have allowed him this choice but should have insisted on proving him guilty of murder in the first degree. The States in their wisdom may take this course by statute or otherwise and may prohibit the practice of accepting pleas to lesser included offenses under any circumstances. But this is not the mandate of the Fourteenth Amendment and the Bill of Rights. The prohibitions against involuntary or unintelligent pleas should not be relaxed, but neither should an exercise in arid logic render those constitutional guarantees counter-productive and put in jeopardy the very human values they were meant to preserve.7
*396The foregoing discussion serves not only to caution against an excessively broad reading of Jachson because of the threat to legitimate plea negotiations, but it also demonstrates compliance of the present sentencing scheme with the Jachson monition that encouragement of defendants not to contest their guilt not be “needless” or “unnecessary”. 390 U. S. at 582, 583, 88 S. Ct. 1209. It has been amply demonstrated above that encouragement of guilty defendants not to contest their guilt is at the very heart of an effective plea negotiation program. While one can never be certain that all defendants so encouraged are in fact guilty, our practice on acceptance of guilty or non vult pleas requires that the judge satisfy himself by inquiry of the defendant and others that there is a factual basis for the plea. R. 3:9-2; State v. Reali, 26 N. J. 222 (1958). As well stated by the Chief Justice in State v. Forcella, supra, “[w]e should not deny a justified leniency for the many, merely to be positive that no man is needlessly encouraged not to defend.” 52 N. J. at 276. The substantial benefits to the State as well as to the generality of criminal defendants, well summarized by the Supreme Court in the excerpt from Brady, quoted above, constitute a “need” for the encouragement of pleas of guilty within the requirement for such need laid down by Jachson (assuming that case survives as authority in respect of situations other than those involving the death penalty, which we strongly doubt8).
*397Nothing said hereinabove loses force by virtue of the fact that in the sentencing scheme before us a life sentence is mandatory upon a conviction of first degree murder. The present litigation is not a seminar on the pros and cons of mandatory sentencing, and our decision here implies no view of sound penological policy in the matter.9 Prom the constitutional standpoint we are considering, i. e., the extent of permissible encouragement of guilty pleas, there can be no objection to mandatory sentencing for prescribed offenses on conviction after trial, this being a policy matter completely within legislative discretion. State v. Hampton, 61 N. J. 250, 273 (1972); People v. Broadie, 37 N. Y. 2d 100, 371 N. Y. S. 2d 471, 481, 332 N. E. 2d 338, 345 (Ct. App. 1975); Commonwealth v. Jackson, 344 N. E. 2d 166, 170 (Sup. Jud. Ct. Mass. 1976); State ex rel. Moraites v. Gorman, 322 N. E. 2d 319, 320-321 (Ct. App. Ohio 1974). So much granted, the ultimate inquiry devolves to whether the juxtaposition of a potential lesser sentence bn a plea of non wait alongside the unexceptionable mandatory life sentence on a conviction condemns the statutory scheme as a needless encouragement of the surrender of the right to defend and therefore an impermissible impingement on defendants’ Fifth Amendment rights. The considerations discussed above strongly argue to the contrary.
The risks attendant upon the choice a murder defendant must make under our murder statute as to whether to defend or plead guilty are comparable to those, arising from many other kinds of decisions a criminal defendant must *398make in the course of a prosecution. See Chaffin v. Stynchcombe, 412 U. S. 17, 93 S. Ct. 1977, 36 L. Ed. 2d 714 (1973) (more onerous verdict by a jury on a retrial after successful appeal from original conviction); Crampton v. Ohio, reported sub nom. McGautha v. California, 402 U. S. 183, 91 S. Ct. 1454, 28 L. Ed. 2d 711 (1971) (dilemma of murder defendant as to whether to testify in single-trial procedure for assessment both of guilt and punishment); Colten v. Kentucky, 407 U. S. 104, 92 S. Ct. 1953, 32 L. Ed. 2d 584 (1972) (retrial de novo on appeal from inferior court with potential of greater punishment); Brady v. United States, supra; McMann v. Richardson, supra 397 U. S. 759, 90 S. Ct. 1441, 25 L. Ed. 2d 763 (choice between challenging coerced confession at trial and pleading guilty to assure lighter sentence). “The criminal process, like the rest of the legal system, is replete with situations requiring The making of difficult judgments’ as to which course to follow”. McGautha v. California, supra 402 U. S. at 213, 91 S. Ct. at 1470. The defendant in a criminal trial “is frequently forced to testify himself and to call other witnesses in an effort to reduce the risk of conviction.” Williams v. Florida, 399 U. S. 78, 83, 90 S. Ct. 1893, 1897, 26 L. Ed. 2d 446 (1970). If he testifies, he exposes himself to confrontation with prior criminal convictions. So too, when an accused presents witnesses at trial, he must reveal their identity and submit them to cross-examination, which, in itself, may prove incriminating or which may furnish the prosecution with strong rebuttal evidence. Id. at 83-84, 90 S. Ct. 1893. That the defendant faces such a dilemma “has never been thought an invasion” of his constitutional rights. Id. at 84, 90 S. Ct. 1897. In all of such situations, as in many similar ones, the question is whether the inherent compulsion of the defendant to make a choice impairs any constitutional right. McGautha v. California, supra 402 U. S. 213, 91 S. Ct. 1454. Unless the courts exercise considerable self-restraint in judging the validity of such constraints upon criminal defendants in our necessarily highly pragmatic *399criminal justice system, its effective operation could be intolerably prejudiced.
Finally, it is our considered view that Jackson today is authority only for a situation where a defendant faces the prospect of a possible death sentence if convicted as against the alternative of merely a prison term if he pleads guilty. We have hereinabove stressed the language of Jackson emphasizing the awful pressure exerted upon a defendant whose choice of a course of action may mean his death. At the time of Jackson, the Court was undoubtedly already sensitive to the considerations which were to lead to the later broad invalidation of death penalties in Furman v. Georgia, 408 U.S. 238, 92 S. Ct. 2726, 33 L. Ed. 2d 346 (1972). Cf. Witherspoon v. Illinois, supra 391 U. S. 510, 88 S. Ct. 1770, 20 L. Ed. 2d 776.
As noted by the dissenting Justices in State v. Forcella, supra, “Jackson was concerned solely with the grisly choice between a plea or waiver with an assurance of no death penalty, and a jury trial with the danger of a death penalty”. 52 N. J. at 301. They further pointed out that “the law has always been administered with pragmatic recognition of the fact that the differences between the death penalty and imprisonment entails more than matters of logic and degree”. Id. at 300-301. In Furman v. Georgia it was stated by Justice Brennan, concurring, that “[t]he calculated killing of a human being by the State involves by its very nature, a denial of the executed person’s humanity”. 408 U. S. at 290, 92 S. Ct. at 2752. “Death, in its finality, differs more from life imprisonment than a 100-year prison term differs from one of only a year or two”. Woodson v. North Carolina, 428 U. S. 280, 305, 96 S. Ct. 2978, 2992, 49 L. Ed. 2d 944, 961 (1976).
We believe enough has been said to demonstrate that the same Court which decided both Jackson and Brady would not strike down as infringing upon Fifth Amendment rights a sentencing scheme providing for a disparity between a potential penalty upon a conviction and that upon a plea of *400guilty where the former was imprisonment rather than the death penalty.
In summary of the foregoing, we conclude: (1) the authority of Jachson is confined to the case of a choice between trial and plea of guilt when a possible consequence of the former, and only of the former, is the death penalty; (2) alternatively, if the authority of Jachson goes beyond situation .(1), any encouragement or inducement of a defendant to plead non vult under our statute and thereby waive his right to trial is not the result of a needless or unnecessary procedural device but a highly useful and desirable one, and the encouragement is therefore not an impermissible infringement of defendant’s Fifth Amendment rights.
II
Alleged Denial of Equal Protection
Defendant contends that the sentencing scheme of N. J. S. A. 2A:113-3, 4 has the effect of separating persons who have committed felony murder into two classes — those who go to trial and those who plead non vult — and of treating the former class differently and discriminatorily as to punishment without a compelling state justification for the difference in treatment. This is urged to constitute an unconstitutional denial of equal protection of the laws.
The State first counters with two preliminary responses: (1) that those indictees who plead non vult are pleading to a different “crime” from that of which one. is convicted where, after trial, the jury returns a verdict of first-degree murder; (2) that the statute does not create differently treated classes, but, rather, merely offers all such indictees a choice, and that it is the defendant who places himself in one “class” or the other based upon his choice. We regard the second response as more semantic than substantive, and pass it. The first response is that in legal contemplation the crime identified by a conviction of first degree murder is different from the undifferentiated crime of murder, as stated *401in the formal indictment, which will support convictions of first or second degree murder or manslaughter. See State v. Sullivan, 43 N. J. 209, 241—247 (1964). Therefore, goes the argument, acceptance of a non vult plea constitutes conviction of a different crime from first degree murder and may be treated differently.
We do not accept the latter position as a fully satisfactory basis for meeting the defendant’s argument, which, it seems to us, can and should be dealt with more directly. We therefore pass to the State’s defense of the statute on grounds more related to the merits of the equal protection .attack.
In the first place, we concur in the State’s rejection of defendant’s contention that the issue calls for application of the more exacting of the two tests for deciding an equal protection question — that of requiring the demonstration of a "compelling state interest” for the classification, as where "suspect” categories or “fundamental” rights are involved. See Dunn v. Blumstein, 405 U. S. 330, 342, 92 S. Ct. 995, 31 L. Ed. 2d 274 (1972); Shapiro v. Thompson, 394 U. S. 618, 634, 89 S. Ct. 1322, 22 L. Ed. 2d 600 (1969); State v. Chambers, 63 N. J. 287, 296 (1973); State v. Costello, 59 N. J. 334, 345-346 (1971) (both of the latter cases involving penological classification based on the suspect category of sex). In this State, however, where the Legislature has created classifications of offenders for purposes of fixing penalty, the courts have continued (absent use-of suspect criteria such as race or sex) to apply the traditional "rational relationship” test. State v. Fearick, 69 N. J. 32, 38 (1976); State v. Smith, 58 N. J. 202, 206-207 (1971). State in Interest of K.V.N., 116 N. J. Super. 580, 589 (App. Div. 1971), aff’d o. b. 60 N. J. 517 (1972). These cases stand for the proposition that in the area of classification of criminal or penal offenders for purposes of penalty or punishment the Legislature may provide for differences of treatment so long as there is some rational connection between the classification and a proper legislative purpose.
*402If, therefore, defendant is right in asserting that murder indictees who contest guilt by trial and are convicted of first degree murder and those whose non vult pleas are accepted by the court are constituted separate classes by the statute, the question as to whether that classification, in the light of the different minimum punishments prescribed for each class is valid, becomes an inquiry as to whether there is a proper legislative purpose to which the classification is rationally related. This inquiry, we are clear, must be resolved in the affirmative. There are several such purposes. The first is the humane and rehabilitative one of ameliorating the rigor of life imprisonment for those offenders who are willing to acknowledge their crime. State v. Poteet, 61 N. J. 493, 496 (1972); State v. Forcella, supra (52 N. J. at 275, 299-300). Other such purposes are fully developed in Part I of this opinion where they are cited to demonstrate that any encouragement in our statutory scheme to murder indictees to plead non vult is “needed” and not “unnecessary”, within Fifth Amendment criteria and considerations. These purposes include the facilitation of plea negotiations in homicide cases, necessary to achieve flexibility and efficiency as well as justice in criminal justice administration; the conservation of scarce judicial and prosecutorial resources for those cases which properly require trial; and the prompter imposition of punishment on acknowledged offenders. See Brady v. United States, supra 397 U. S. at 752, 90 S. Ct. 1463.
All of the foregoing presumptive legislative purposes are, to say the least, rationally connected with the difference in potential minimum penalties respectively imposable upon conviction of first degree murder and upon acceptance by the court of a non vult plea to a charge of murder.10 That such purposes, arguably, could be served more wisely were there a more flexible range of punishments on conviction for first *403degree murder than the life imprisonment now mandated is irrelevant, for equal protection purposes. The Legislature is not required to formulate the plan that seems most rational or sound to the court. It is sufficient if any rational basis relevant to a proper purpose underlies the classification and the attendant treatment of the classes affected. State v. Smith, 58 N. J. 202, 206-207 (1971); State v. DeStasio, 49 N. J. 247, 260 (1967), cert. den. 389 U. S. 830, 88 S. Ct. 96, 19 L. Ed. 2d 89 (1967); State v. Wingler, 25 N. J. 161, 175-176 (1957).
We conclude the equal protection attack upon the statutory scheme is without merit.
Judgment affirmed.