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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
12198083243961678 ~1986
12198371975869698 ~1988
12198479243969598 ~1986
12198509156140915310 ~1991
12198569975885538 ~1988
121986911219869119 ~1988
121988591219885919 ~1988
12199097117111331310 ~1990
12199199243983998 ~1986
121993514879740419 ~1990
12199403243988078 ~1986
121994571707923999 ~1988
12199697731981838 ~1988
12200291244005838 ~1986
12200399244007998 ~1986
12200533732031998 ~1988
122006214636235999 ~1989
122007791220077919 ~1988
12200843244016878 ~1986
12201131244022638 ~1986
12201191244023838 ~1986
12201193732071598 ~1988
12201353732081198 ~1988
12201719244034398 ~1986
122024711952395379 ~1989
Exponent Prime Factor Digits Year
12202691244053838 ~1986
12203003244060078 ~1986
12203183244063678 ~1986
12203651244073038 ~1986
12203699244073998 ~1986
12203759244075198 ~1986
12204323244086478 ~1986
12204397732263838 ~1988
12204551244091038 ~1986
122045832929099939 ~1989
12204611244092238 ~1986
12204851244097038 ~1986
122052792196950239 ~1989
12205601732336078 ~1988
12205691976455298 ~1988
12205777732346638 ~1988
122061011952976179 ~1989
12206177732370638 ~1988
12206339244126798 ~1986
12206393732383598 ~1988
12206423244128478 ~1986
12206497732389838 ~1988
12206543244130878 ~1986
12206879244137598 ~1986
12206897732413838 ~1988
Exponent Prime Factor Digits Year
122072712197308799 ~1989
12207323244146478 ~1986
12207731244154638 ~1986
12207911244158238 ~1986
12208019244160398 ~1986
122083733662511919 ~1989
12208433732505998 ~1988
12208597732515838 ~1988
12208751976700098 ~1988
122087691709227679 ~1988
12208919244178398 ~1986
12209101732546078 ~1988
12209521732571278 ~1988
122095211953523379
12209563380938365710 ~1992
12209591244191838 ~1986
122100071221000719 ~1988
12210101976808098 ~1988
12210119244202398 ~1986
122104675861024179 ~1990
12210563244211278 ~1986
12211057732663438 ~1988
12211273732676398 ~1988
122113373663401119 ~1989
12211757732705438 ~1988
Exponent Prime Factor Digits Year
12212113732726798 ~1988
12212159244243198 ~1986
12212159976972738
122124132930979139 ~1989
12212699244253998 ~1986
12212771244255438 ~1986
12212771977021698
12212831244256638 ~1986
12212833732769998 ~1988
12212939244258798 ~1986
12213863244277278 ~1986
12214019244280398 ~1986
12214289977143138 ~1988
12214417732865038 ~1988
12214523244290478 ~1986
12215123244302478 ~1986
12215279244305598 ~1986
12215473732928398 ~1988
122154731954475699
12215543244310878 ~1986
122158511221585119 ~1988
12216041732962478 ~1988
12216203244324078 ~1986
122162234886489219 ~1990
122162472198924479 ~1989
1184
GIMPS The Prime Pages FactorDb.com
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26-03-08