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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
258561116722588879 ~1992
25856339517126798 ~1989
258564196205540579 ~1992
25856783517135678 ~1989
25857563517151278 ~1989
258579773620116799 ~1991
25858103517162078 ~1989
25858379517167598 ~1989
25858403517168078 ~1989
258589072068712579 ~1990
25859243517184878 ~1989
258593812068750499 ~1990
258594137757823919 ~1992
258594594654702639 ~1991
25859591517191838 ~1989
25860203517204078 ~1989
25860839517216798 ~1989
258610192068881539 ~1990
25861271517225438 ~1989
25861691517233838 ~1989
25862279517245598 ~1989
25862351517247038 ~1989
25862411517248238 ~1989
25863011517260238 ~1989
25863263517265278 ~1989
Exponent Prime Factor Digits Year
25863479517269598 ~1989
25863899517277998 ~1989
25864931517298638 ~1989
25865951517319038 ~1989
25866143517322878 ~1989
258662712586627119 ~1991
25866383517327678 ~1989
258664371551986239 ~1990
25866983517339678 ~1989
25867031517340638 ~1989
25867139517342798 ~1989
25867631517352638 ~1989
258680415690969039 ~1991
25868723517374478 ~1989
25868987144866327310 ~1992
258691674656450079 ~1991
25869323517386478 ~1989
25869731517394638 ~1989
25869743517394878 ~1989
25869923517398478 ~1989
25870589269054125710 ~1993
25871243517424878 ~1989
25871759517435198 ~1989
25871771517435438 ~1989
25871819517436398 ~1989
Exponent Prime Factor Digits Year
25871999517439998 ~1989
25872443517448878 ~1989
25872859108666007910 ~1992
25872911517458238 ~1989
25873163517463278 ~1989
25874039517480798 ~1989
25874099517481998 ~1989
258744771552468639 ~1990
25874591517491838 ~1989
258749931552499599 ~1990
25875611517512238 ~1989
258763695692801199 ~1991
25876463517529278 ~1989
25876919517538398 ~1989
25877123517542478 ~1989
258782872070262979 ~1990
258783192587831919 ~1991
258788571552731439 ~1990
25878971517579438 ~1989
258795171552771039 ~1990
25879523517590478 ~1989
258796811552780879 ~1990
25879943517598878 ~1989
25880639517612798 ~1989
258807411552844479 ~1990
Exponent Prime Factor Digits Year
258809171552855039 ~1990
258809174140946739
25881671517633438 ~1989
258822292070578339 ~1990
25882319517646398 ~1989
25882511517650238 ~1989
25882583517651678 ~1989
258834131553004799 ~1990
25885091517701838 ~1989
258851411553108479 ~1990
258852411553114479 ~1990
25885283517705678 ~1989
25885631517712638 ~1989
25885859517717198 ~1989
25886411517728238 ~1989
258864531553187199 ~1990
258865931553195599 ~1990
25886771517735438 ~1989
25887551517751038 ~1989
25888319517766398 ~1989
25888463517769278 ~1989
25888559517771198 ~1989
25888871517777438 ~1989
25889579517791598 ~1989
258895811553374879 ~1990
1617
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25-06-08