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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
26169971523399438 ~1989
26170031523400638 ~1989
26170271523405438 ~1989
261720171570321039 ~1990
261725331570351999 ~1990
26172563523451278 ~1989
26172791523455838 ~1989
26172803523456078 ~1989
26172983523459678 ~1989
26173139523462798 ~1989
26173859523477198 ~1989
26173883523477678 ~1989
26174231523484638 ~1989
26174243523484878 ~1989
261746572093972579 ~1990
261750432617504319 ~1991
26175491523509838 ~1989
26175839523516798 ~1989
26176151523523038 ~1989
261765371570592239 ~1990
26177579523551598 ~1989
26177663523553278 ~1989
26177843523556878 ~1989
26178731523574638 ~1989
26178983523579678 ~1989
Exponent Prime Factor Digits Year
261791171570747039 ~1990
26179859523597198 ~1989
26179931523598638 ~1989
261801114712419999 ~1991
26180411523608238 ~1989
261805731570834399 ~1990
261806812094454499 ~1990
26181671523633438 ~1989
261818472618184719 ~1991
26182319523646398 ~1989
261828131570968799 ~1990
26182991523659838 ~1989
26183123523662478 ~1989
26183819523676398 ~1989
261847492094779939 ~1990
261849971571099839 ~1990
261856196284548579 ~1992
26185931523718638 ~1989
261859612094876899 ~1990
26186423523728478 ~1989
261866514713597199 ~1991
26187383523747678 ~1989
26187851523757038 ~1989
26188031523760638 ~1989
261884931571309599 ~1990
Exponent Prime Factor Digits Year
26189123523782478 ~1989
26189183523783678 ~1989
26189759523795198 ~1989
26190023523800478 ~1989
26190539523810798 ~1989
26190623523812478 ~1989
26191391523827838 ~1989
261915314190644979 ~1991
26192339523846798 ~1989
26192531523850638 ~1989
26192711523854238 ~1989
261930196286324579 ~1992
26193059523861198 ~1989
26193263523865278 ~1989
26194319523886398 ~1989
26194379523887598 ~1989
26194403523888078 ~1989
26194823523896478 ~1989
26195051523901038 ~1989
26195231523904638 ~1989
26196143523922878 ~1989
26197043523940878 ~1989
26197631523952638 ~1989
261976316811384079
261985731571914399 ~1990
Exponent Prime Factor Digits Year
26198591523971838 ~1989
26198723523974478 ~1989
26199443523988878 ~1989
26199791523995838 ~1989
26200019524000398 ~1989
26200931524018638 ~1989
26201099524021998 ~1989
26201183524023678 ~1989
26201303524026078 ~1989
26202119524042398 ~1989
262024196288580579 ~1992
26202503524050078 ~1989
262030634192490099 ~1991
26203379524067598 ~1989
262037895764833599 ~1991
26203811524076238 ~1989
26204159524083198 ~1989
26204219524084398 ~1989
262045934192734899 ~1991
26204663524093278 ~1989
26204947251567491310 ~1993
26205863524117278 ~1989
26206151524123038 ~1989
262062472096499779 ~1990
26207243524144878 ~1989
1616
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25-05-04