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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
198621894766925379 ~1991
19862879397257598 ~1988
19862939397258798 ~1988
198633311986333119 ~1990
19863359397267198 ~1988
198637732780928239 ~1990
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
19867583397351678 ~1988
19867691397353838 ~1988
19867703397354078 ~1988
19868099397361998 ~1988
19868111397362238 ~1988
198681411192088479 ~1989
Exponent Prime Factor Digits Year
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
198744892782428479 ~1990
198752211590017699 ~1989
19875239397504798 ~1988
19876079397521598 ~1988
19876271397525438 ~1988
19876691397533838 ~1988
Exponent Prime Factor Digits Year
19877183397543678 ~1988
19877303397546078 ~1988
198773717950948419 ~1991
19877699397553998 ~1988
198776996360863699
19877723397554478 ~1988
19878011397560238 ~1988
198781971590255779 ~1989
19878539397570798 ~1988
19878671397573438 ~1988
19878779397575598 ~1988
19878983397579678 ~1988
19879439397588798 ~1988
198795974771103299 ~1991
198798011192788079 ~1989
19879883397597678 ~1988
19880111397602238 ~1988
19880771397615438 ~1988
198808571192851439 ~1989
19881503397630078 ~1988
19882091397641838 ~1988
198822731192936399 ~1989
19882403397648078 ~1988
19882591131225100710 ~1992
19882631397652638 ~1988
Exponent Prime Factor Digits Year
19882871397657438 ~1988
19883543397670878 ~1988
19883711397674238 ~1988
19884071397681438 ~1988
19884191397683838 ~1988
19884311397686238 ~1988
198860591988605919 ~1990
198860934772662339 ~1991
19886411397728238 ~1988
19886423397728478 ~1988
19886759397735198 ~1988
198871931193231599 ~1989
19888331397766638 ~1988
19888343397766878 ~1988
19888439397768798 ~1988
19888703397774078 ~1988
19888873139222111110 ~1992
198895371193372239 ~1989
19890443397808878 ~1988
198909731193458399 ~1989
19891439397828798 ~1988
19891523397830478 ~1988
198918771591350179 ~1989
198919811193518879 ~1989
19892003397840078 ~1988
1459
GIMPS The Prime Pages FactorDb.com
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25-10-20