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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
208926171671409379 ~1990
208927211253563279 ~1989
20892743417854878 ~1988
20893199417863998 ~1988
20893919417878398 ~1988
20894099417881998 ~1988
20894183417883678 ~1988
20894771417895438 ~1988
20895071417901438 ~1988
20895443417908878 ~1988
20896091417921838 ~1988
208966071671728579 ~1990
208968535015244739 ~1991
20897231417944638 ~1988
20897291417945838 ~1988
20897483417949678 ~1988
20898323417966478 ~1988
20898863417977278 ~1988
208999513343992179 ~1990
208999611253997679 ~1989
20900903418018078 ~1988
20902019418040398 ~1988
20902103104510515110 ~1992
209029011254174079 ~1989
20903411418068238 ~1988
Exponent Prime Factor Digits Year
209041819615923279 ~1991
209042811254256879 ~1989
20904599418091998 ~1988
20904839418096798 ~1988
20904899418097998 ~1988
20905103418102078 ~1988
209053971254323839 ~1989
20905931418118638 ~1988
209073011254438079 ~1989
20907371418147438 ~1988
209074491672595939 ~1990
20909363418187278 ~1988
209099533345592499 ~1990
209102771254616639 ~1989
20910299418205998 ~1988
209104371672834979 ~1990
20910443418208878 ~1988
20910503418210078 ~1988
20910803418216078 ~1988
20910863418217278 ~1988
20911043418220878 ~1988
20912351418247038 ~1988
20913059418261198 ~1988
20913719418274398 ~1988
20913779418275598 ~1988
Exponent Prime Factor Digits Year
20913839418276798 ~1988
20914163418283278 ~1988
20914319418286398 ~1988
20914451418289038 ~1988
20914511418290238 ~1988
20915017497777404710 ~1993
209150391673203139 ~1990
20915123418302478 ~1988
20915663418313278 ~1988
209159592091595919 ~1990
20916251418325038 ~1988
20916299418325998 ~1988
20916419418328398 ~1988
20916491418329838 ~1988
20917619418352398 ~1988
20918039418360798 ~1988
20919383418387678 ~1988
209201391673611139 ~1990
209203372928847199 ~1990
20920391418407838 ~1988
209204411255226479 ~1989
209207232092072319 ~1990
209216475021195299 ~1991
20921819418436398 ~1988
20922397100427505710 ~1992
Exponent Prime Factor Digits Year
20923163418463278 ~1988
209234932929289039 ~1990
20923559418471198 ~1988
209236571255419439 ~1989
20923691418473838 ~1988
20924003418480078 ~1988
209244195021860579 ~1991
209245371255472239 ~1989
20924639418492798 ~1988
209253371255520239 ~1989
209257872092578719 ~1990
20926319418526398 ~1988
209265131255590799 ~1989
20926931418538638 ~1988
209273275441105039 ~1991
20927339418546798 ~1988
20927411418548238 ~1988
20927579418551598 ~1988
20927639418552798 ~1988
20928179418563598 ~1988
20928191418563838 ~1988
20928359418567198 ~1988
20928431418568638 ~1988
209288112092881119 ~1990
209288771255732639 ~1989
1459
GIMPS The Prime Pages FactorDb.com
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25-06-08