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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
198480891587847139 ~1989
19848611396972238 ~1988
19848623396972478 ~1988
198487131190922799 ~1989
19848743396974878 ~1988
198488111984881119 ~1990
19849139396982798 ~1988
19849451396989038 ~1988
19849751396995038 ~1988
19851431397028638 ~1988
19851479397029598 ~1988
198514871985148719 ~1990
19851709138961963110 ~1992
19851803397036078 ~1988
19851983397039678 ~1988
19852103397042078 ~1988
19852223397044478 ~1988
19852499397049998 ~1988
19852643397052878 ~1988
198529813176476979 ~1990
19853303397066078 ~1988
198534371191206239 ~1989
198535673573642079 ~1990
19853891397077838 ~1988
19854179397083598 ~1988
Exponent Prime Factor Digits Year
19854203397084078 ~1988
19855259397105198 ~1988
198554713176875379 ~1990
198554871588438979 ~1989
19855679397113598 ~1988
19856099397121998 ~1988
198561013176976179 ~1990
19856183397123678 ~1988
19856363397127278 ~1988
19856519397130398 ~1988
19856891397137838 ~1988
198573531191441199 ~1989
19857611397152238 ~1988
19857731397154638 ~1988
198582771191496639 ~1989
19858343397166878 ~1988
19858379397167598 ~1988
198585771981885984711 ~1995
19858859397177198 ~1988
19859159397183198 ~1988
19859363397187278 ~1988
198596331191577999 ~1989
19860311397206238 ~1988
198603971191623839 ~1989
19860593158884744110 ~1992
Exponent Prime Factor Digits Year
19860611397212238 ~1988
198609774766634499 ~1991
19861031397220638 ~1988
198615313177844979 ~1990
198616931191701599 ~1989
198617571191705439 ~1989
198621111588968899 ~1989
198621894766925379 ~1991
19862879397257598 ~1988
19862939397258798 ~1988
198633311986333119 ~1990
19863359397267198 ~1988
198638271589106179 ~1989
198639711589117699 ~1989
19863983397279678 ~1988
19864343397286878 ~1988
19864679397293598 ~1988
19864703397294078 ~1988
19865099397301998 ~1988
19865291397305838 ~1988
19865903397318078 ~1988
19865999397319998 ~1988
19867163397343278 ~1988
19867327210593666310 ~1992
198674531192047199 ~1989
Exponent Prime Factor Digits Year
19867583397351678 ~1988
19867691397353838 ~1988
19867703397354078 ~1988
19868099397361998 ~1988
19868111397362238 ~1988
198681411192088479 ~1989
19868603397372078 ~1988
19868819397376398 ~1988
19868939397378798 ~1988
19869491397389838 ~1988
198702311987023119 ~1990
19870583397411678 ~1988
19870619397412398 ~1988
198707334768975939 ~1991
19871063397421278 ~1988
198712636756229439 ~1991
198713811589710499 ~1989
198714131192284799 ~1989
19872383397447678 ~1988
19872551397451038 ~1988
198727571192365439 ~1989
198727611192365679 ~1989
19873811397476238 ~1988
19874339397486798 ~1988
19874423397488478 ~1988
1408
GIMPS The Prime Pages FactorDb.com
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25-04-13