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Small Mersenne Prime Factors
Prime numbers of the form Mp= 2p − 1 are called Mersenne primes. For Mp to be prime, p must also be prime.
Any factor q of a Mersenne number 2p − 1 must be of the form 2kp + 1, where integer k ≥ 0. Furthermore, q must be 1 or 7 mod 8.
Exponent Prime Factor Digits Year
202820571216923439 ~1989
20282231405644638 ~1988
20282303405646078 ~1988
20282903405658078 ~1988
20283671405673438 ~1988
20284223405684478 ~1988
20284331405686638 ~1988
202850171217101039 ~1989
20286263405725278 ~1988
20286419405728398 ~1988
20286443405728878 ~1988
20286503405730078 ~1988
20287199405743998 ~1988
202872072028720719 ~1990
20287583405751678 ~1988
20288003405760078 ~1988
20288459405769198 ~1988
20288699405773998 ~1988
20288759405775198 ~1988
20288843405776878 ~1988
202888992028889919 ~1990
20289011405780238 ~1988
20290331405806638 ~1988
20290943405818878 ~1988
20291423405828478 ~1988
Exponent Prime Factor Digits Year
20291471405829438 ~1988
20291483405829678 ~1988
20291783405835678 ~1988
20291879405837598 ~1988
20292071405841438 ~1988
20292131405842638 ~1988
20292479405849598 ~1988
20292791405855838 ~1988
20293103405862078 ~1988
20293151405863038 ~1988
20294063405881278 ~1988
202942971217657839 ~1989
20294363405887278 ~1988
20295083405901678 ~1988
202951331217707999 ~1989
20295323405906478 ~1988
20295623405912478 ~1988
20295791405915838 ~1988
20296439405928798 ~1988
20297363405947278 ~1988
20297531405950638 ~1988
202976331217857999 ~1989
202982331217893999 ~1989
202982811217896879 ~1989
20298539405970798 ~1988
Exponent Prime Factor Digits Year
20298611405972238 ~1988
202989131217934799 ~1989
202989531217937199 ~1989
20299151405983038 ~1988
202991571217949439 ~1989
202993032029930319 ~1990
202997811217986879 ~1989
20299859405997198 ~1988
20300123406002478 ~1988
20300279406005598 ~1988
20300459406009198 ~1988
20300519406010398 ~1988
203005731218034399 ~1989
203008211218049279 ~1989
20300999406019998 ~1988
20301059406021198 ~1988
20301371406027438 ~1988
20301563406031278 ~1988
20301779406035598 ~1988
20302151406043038 ~1988
20302211406044238 ~1988
20302319406046398 ~1988
20302619406052398 ~1988
203035191624281539 ~1990
20303663406073278 ~1988
Exponent Prime Factor Digits Year
20304419406088398 ~1988
20305079406101598 ~1988
20305451406109038 ~1988
20305583406111678 ~1988
20305979406119598 ~1988
20306339406126798 ~1988
20307071406141438 ~1988
20307251406145038 ~1988
203075411218452479 ~1989
203075571218453439 ~1989
20307671406153438 ~1988
20307719406154398 ~1988
20308031406160638 ~1988
20308199406163998 ~1988
203084811624678499 ~1990
203086333249381299 ~1990
203091531218549199 ~1989
20309771406195438 ~1988
20309843406196878 ~1988
20310131406202638 ~1988
203103172843444399 ~1990
20310683406213678 ~1988
20311079406221598 ~1988
20311103406222078 ~1988
203111771218670639 ~1989
1423
GIMPS The Prime Pages FactorDb.com
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25-04-13