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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
42857411857148238 ~1991
42857651857153038 ~1991
428576573428612579 ~1992
42859919857198398 ~1991
42861491857229838 ~1991
42861839857236798 ~1991
42862433102869839310 ~1993
42862511857250238 ~1991
42863531857270638 ~1991
428636336000908639 ~1993
42863699857273998 ~1991
42864011857280238 ~1991
42868439857368798 ~1991
428703612572221679 ~1992
42871079857421598 ~1991
42871463857429278 ~1991
42872117128616351110 ~1993
42872339857446798 ~1991
428725673429805379 ~1992
42873871411589161710 ~1995
42875291857505838 ~1991
42876371180080758310 ~1994
42876563857531278 ~1991
42876803857536078 ~1991
42877031857540638 ~1991
Exponent Prime Factor Digits Year
42877223857544478 ~1991
42877811857556238 ~1991
42880091857601838 ~1991
428815332572891999 ~1992
42881543857630878 ~1991
428819213430553699 ~1992
42883811857676238 ~1991
42884279857685598 ~1991
42884519857690398 ~1991
42886379857727598 ~1991
428863797719548239
428863913302252107111 ~1997
42886463857729278 ~1991
42889439857788798 ~1991
42889823857796478 ~1991
42890209128670627110 ~1993
428905373431242979 ~1992
42891599857831998 ~1991
42891743857834878 ~1991
428938972573633839 ~1992
42893951857879038 ~1991
428941699436717199 ~1993
42894623857892478 ~1991
428946231029470952111
42896279857925598 ~1991
Exponent Prime Factor Digits Year
42896351857927038 ~1991
428968793431750339 ~1992
42896939857938798 ~1991
428980612573883679 ~1992
42898763857975278 ~1991
42898787102957088910 ~1993
428992313431938499 ~1992
42899471857989438 ~1991
42900491858009838 ~1991
42901283858025678 ~1991
42901511858030238 ~1991
42902737231674779910 ~1994
429028913432231299 ~1992
42903863858077278 ~1991
429047393432379139 ~1992
429049877722897679 ~1993
42905171858103438 ~1991
42905651858113038 ~1991
42906179858123598 ~1991
42906491858129838 ~1991
42906551858131038 ~1991
429068332574409999 ~1992
429072372574434239 ~1992
42909653240294056910 ~1994
42909959858199198 ~1991
Exponent Prime Factor Digits Year
42910403858208078 ~1991
429106612574639679 ~1992
42911783858235678 ~1991
42912179858243598 ~1991
42912251858245038 ~1991
429125572574753439 ~1992
42912791858255838 ~1991
42912899858257998 ~1991
42912911858258238 ~1991
42913943858278878 ~1991
429143572574861439 ~1992
42915839858316798 ~1991
42917351858347038 ~1991
42918413266094160710 ~1994
42919139858382798 ~1991
429195532575173199 ~1992
42920651858413038 ~1991
42923579858471598 ~1991
42924131858482638 ~1991
429241373433930979 ~1992
429246412575478479 ~1992
42924851858497038 ~1991
42925079858501598 ~1991
42925871858517438 ~1991
429261616868185779 ~1993
1994
GIMPS The Prime Pages FactorDb.com
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25-07-08