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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.
Exp. Prime Factor Digits Year
72427331593401279 ~1987
7242737434564238 ~1986
7242847724284718 ~1986
7242863144857278 ~1985
7243163144863278 ~1985
7243381102856010310 ~1989
7243583144871678 ~1985
72436972173109119 ~1987
7243979144879598 ~1985
7244131724413118 ~1986
7244291579543298 ~1986
7244761434685678 ~1986
7244791724479118 ~1986
72451677100263679 ~1989
7245239144904798 ~1985
72452571738861699 ~1987
7245361434721678 ~1986
72453612173608319
72454391738905379 ~1987
7245863144917278 ~1985
7245923144918478 ~1985
72461331739071939 ~1987
7246363724636318 ~1986
72463872898554819 ~1988
7246559144931198 ~1985
Exp. Prime Factor Digits Year
7246643144932878 ~1985
7246667579733378 ~1986
7246753434805198 ~1986
7247257434835438 ~1986
7247291144945838 ~1985
72473337392279679 ~1989
7247351144947038 ~1985
7247393434843598 ~1986
72479271304626879 ~1987
7248119144962398 ~1985
7248251579860098 ~1986
7248299579863938 ~1986
7248379724837918 ~1986
7248497434909838 ~1986
72486532174595919 ~1987
7248739724873918 ~1986
7248821434929278 ~1986
7248881434932878 ~1986
72490931159854899 ~1987
7249211144984238 ~1985
7249337434960238 ~1986
7249441434966478 ~1986
7249523144990478 ~1985
72495731159931699 ~1987
7249841434990478 ~1986
Exp. Prime Factor Digits Year
7249919144998398 ~1985
7249943144998878 ~1985
7250051145001038 ~1985
7250189580015138 ~1986
7250231145004638 ~1985
7250291145005838 ~1985
7250339145006798 ~1985
7250363145007278 ~1985
7250717580057378 ~1986
7250861580068898 ~1986
7251011580080898 ~1986
7251059145021198 ~1985
72510911305196399 ~1987
7251311145026238 ~1985
7251317435079038 ~1986
7251599145031998 ~1985
72516912900676419 ~1988
7251757435105438 ~1986
7251791145035838 ~1985
7252187580174978 ~1986
7252363725236318 ~1986
7252381435142878 ~1986
7252501435150078 ~1986
7252571145051438 ~1985
7252631145052638 ~1985
Exp. Prime Factor Digits Year
72530631740735139 ~1987
7253531145070638 ~1985
72536692321174099 ~1988
7253837435230238 ~1986
7253941435236478 ~1986
7253957580316578 ~1986
7254179145083598 ~1985
7254419145088398 ~1985
7254617435277038 ~1986
7254743145094878 ~1985
7254761435285678 ~1986
72548031886248799 ~1987
7255019145100398 ~1985
7255067580405378 ~1986
7255151145103038 ~1985
7255693435341598 ~1986
7255763145115278 ~1985
72559511306071199 ~1987
7255979580478338 ~1986
7256393435383598 ~1986
7256519580521538 ~1986
7256527725652718 ~1986
7256591145131838 ~1985
72565936821197439 ~1989
7256849580547938 ~1986
875
GIMPS The Prime Pages FactorDb.com
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26-01-11