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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
25617023512340478 ~1989
256176112049408899 ~1990
25617731512354638 ~1989
25617803512356078 ~1989
25618259512365198 ~1989
25618979512379598 ~1989
25619123512382478 ~1989
25620281614886744110 ~1994
256207133586899839 ~1991
256212374099397939 ~1991
25621331512426638 ~1989
25621619512432398 ~1989
25621691512433838 ~1989
25621859512437198 ~1989
25622339512446798 ~1989
25622351512447038 ~1989
25623239512464798 ~1989
25623551512471038 ~1989
25624019512480398 ~1989
25624271512485438 ~1989
256244992049959939 ~1990
25624583512491678 ~1989
25624883512497678 ~1989
256254418200141139 ~1992
25625843512516878 ~1989
Exponent Prime Factor Digits Year
25626911512538238 ~1989
25626959512539198 ~1989
256270612050164899 ~1990
25627103512542078 ~1989
25628111512562238 ~1989
25628483512569678 ~1989
25629491512589838 ~1989
25629731512594638 ~1989
25631159512623198 ~1989
25631219512624398 ~1989
25631279512625598 ~1989
256316931537901599 ~1990
256321512563215119 ~1991
256325333588554639 ~1991
25633103512662078 ~1989
25633319512666398 ~1989
256340874614135679 ~1991
25634123512682478 ~1989
25634639512692798 ~1989
25634663512693278 ~1989
25635059512701198 ~1989
256353776152490499 ~1991
256353971538123839 ~1990
25635479512709598 ~1989
25635671512713438 ~1989
Exponent Prime Factor Digits Year
25636199512723998 ~1989
256362531538175199 ~1990
25636343512726878 ~1989
25636463512729278 ~1989
25636619512732398 ~1989
25636811512736238 ~1989
25637831512756638 ~1989
25638311512766238 ~1989
25638551512771038 ~1989
256397872051182979 ~1990
25639931512798638 ~1989
25639979512799598 ~1989
25640399512807998 ~1989
256406771538440639 ~1990
256410472051283779 ~1990
25641419512828398 ~1989
25641683512833678 ~1989
25641911512838238 ~1989
256419712051357699 ~1990
25642277143596751310 ~1992
25642439512848798 ~1989
25642499512849998 ~1989
25642811512856238 ~1989
25643291512865838 ~1989
25643543512870878 ~1989
Exponent Prime Factor Digits Year
25643771512875438 ~1989
25643869138476892710 ~1992
25644263512885278 ~1989
25644299512885998 ~1989
256443376154640899 ~1991
25644431512888638 ~1989
25644779512895598 ~1989
256448411538690479 ~1990
25646363369307627310 ~1993
25646843512936878 ~1989
25647659512953198 ~1989
256482011538892079 ~1990
25649159512983198 ~1989
256496936155926339 ~1991
25650539513010798 ~1989
256506411539038479 ~1990
256507011539042079 ~1990
25651211513024238 ~1989
25651259513025198 ~1989
25651343513026878 ~1989
25651943513038878 ~1989
25651991513039838 ~1989
25652111513042238 ~1989
256521112052168899
25652339513046798 ~1989
1616
GIMPS The Prime Pages FactorDb.com
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25-06-29