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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
25097543501950878 ~1989
250975438031213779
250975872509758719 ~1990
250978371505870239 ~1990
25098323501966478 ~1989
25098371501967438 ~1989
250984817529544319 ~1992
25098719501974398 ~1989
250991472509914719 ~1990
250992192509921919 ~1990
25099253140555816910 ~1992
25099271501985438 ~1989
25099331501986638 ~1989
25099499501989998 ~1989
25099619501992398 ~1989
25099631501992638 ~1989
25099777100399108110 ~1992
250998611505991679 ~1990
25100639502012798 ~1989
251013017530390319 ~1992
25101371502027438 ~1989
25102403502048078 ~1989
25102739502054798 ~1989
25103219502064398 ~1989
25103411502068238 ~1989
Exponent Prime Factor Digits Year
251045896025101379 ~1991
25104743502094878 ~1989
251054333514760639 ~1991
251057771506346639 ~1990
25106051502121038 ~1989
251067292008538339 ~1990
25106891502137838 ~1989
25107311502146238 ~1989
251073731506442399 ~1990
25107851502157038 ~1989
25108211502164238 ~1989
25108679502173598 ~1989
251088718034838739 ~1992
25108943502178878 ~1989
25109159502183198 ~1989
25109351502187038 ~1989
251094192510941919 ~1990
251094772008758179 ~1990
25109543502190878 ~1989
25109723502194478 ~1989
251104136026499139 ~1991
25110671502213438 ~1989
25110719502214398 ~1989
25110971502219438 ~1989
25111139502222798 ~1989
Exponent Prime Factor Digits Year
25111211502224238 ~1989
25111571502231438 ~1989
25112063502241278 ~1989
25112099502241998 ~1989
25113083502261678 ~1989
251133771506802639 ~1990
25113719502274398 ~1989
251140072009120579 ~1990
25114571502291438 ~1989
251148611506891679 ~1990
25116083502321678 ~1989
25116419502328398 ~1989
25116911502338238 ~1989
251169371507016239 ~1990
251171992009375939 ~1990
251173493516428879 ~1991
25117643502352878 ~1989
25118111502362238 ~1989
251184531507107199 ~1990
25118459502369198 ~1989
25118531502370638 ~1989
25118591502371838 ~1989
25118651502373038 ~1989
25118963502379278 ~1989
25119299502385998 ~1989
Exponent Prime Factor Digits Year
25119683502393678 ~1989
251197971507187839 ~1990
251199371507196239 ~1990
251202472009619779 ~1990
25121303502426078 ~1989
25121471502429438 ~1989
25122131502442638 ~1989
25122239502444798 ~1989
251224676531841439 ~1992
25122551502451038 ~1989
25122899502457998 ~1989
25123079502461598 ~1989
25123211502464238 ~1989
25123303100493212110 ~1992
25123391502467838 ~1989
25123583502471678 ~1989
25125059502501198 ~1989
25125491502509838 ~1989
25125539502510798 ~1989
25125851502517038 ~1989
25126043502520878 ~1989
251266571507599439 ~1990
251270272010162179 ~1990
25128263502565278 ~1989
25128599502571998 ~1989
1594
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25-06-08