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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
256135697684070719 ~1992
25613603512272078 ~1989
25613963512279278 ~1989
25614059512281198 ~1989
256141792049134339 ~1990
25614371512287438 ~1989
25614383512287678 ~1989
25614779512295598 ~1989
25614923512298478 ~1989
25615151512303038 ~1989
25615259512305198 ~1989
25615441179308087110 ~1993
25615559512311198 ~1989
25615883512317678 ~1989
25615979512319598 ~1989
25616639512332798 ~1989
25616711512334238 ~1989
25617023512340478 ~1989
256176112049408899 ~1990
25617731512354638 ~1989
25617803512356078 ~1989
25618259512365198 ~1989
25618979512379598 ~1989
25619123512382478 ~1989
25620281614886744110 ~1994
Exponent Prime Factor Digits Year
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
25626911512538238 ~1989
25626959512539198 ~1989
256270612050164899 ~1990
25627103512542078 ~1989
25628111512562238 ~1989
25628483512569678 ~1989
25629491512589838 ~1989
25629731512594638 ~1989
25631159512623198 ~1989
Exponent Prime Factor Digits Year
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
25636199512723998 ~1989
256362531538175199 ~1990
25636343512726878 ~1989
25636463512729278 ~1989
25636619512732398 ~1989
25636811512736238 ~1989
25637831512756638 ~1989
25638311512766238 ~1989
25638551512771038 ~1989
Exponent Prime Factor Digits Year
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
25643771512875438 ~1989
25643869138476892710 ~1992
25644263512885278 ~1989
25644299512885998 ~1989
256443376154640899 ~1991
25644431512888638 ~1989
25644779512895598 ~1989
256448411538690479 ~1990
25646363369307627310 ~1993
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25-04-13