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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
21979439439588798 ~1988
21979571439591438 ~1988
21979943439598878 ~1988
219800515714813279 ~1991
21980363439607278 ~1988
219804011318824079 ~1989
21980411439608238 ~1988
21980771439615438 ~1988
21981143439622878 ~1988
21981611439632238 ~1988
21982151439643038 ~1988
219823513956823199 ~1991
21982451439649038 ~1988
21982931439658638 ~1988
21983999439679998 ~1988
219847632198476319 ~1990
21985031439700638 ~1988
219852411758819299 ~1990
21985283439705678 ~1988
219853611319121679 ~1989
21985499439709998 ~1988
219854991758839939
219859272198592719 ~1990
219868632198686319 ~1990
21986903439738078 ~1988
Exponent Prime Factor Digits Year
21987299439745998 ~1988
21988019439760398 ~1988
21988511439770238 ~1988
219889193958005439 ~1991
21989171439783438 ~1988
219896571319379439 ~1989
219897775277546499 ~1991
21989879439797598 ~1988
21990179439803598 ~1988
21990491439809838 ~1988
21990791439815838 ~1988
219907911759263299
219908531319451199 ~1989
21990959439819198 ~1988
21991583439831678 ~1988
21991631439832638 ~1988
21991883439837678 ~1988
21991919439838398 ~1988
21992231439844638 ~1988
21992303439846078 ~1988
21992303123156896910
21993239439864798 ~1988
219934811319608879 ~1989
21994139439882798 ~1988
219946032199460319 ~1990
Exponent Prime Factor Digits Year
21995063439901278 ~1988
219951773079324799 ~1990
21995243439904878 ~1988
21995423439908478 ~1988
21995903439918078 ~1988
219959211759673699 ~1990
21996179439923598 ~1988
21996983439939678 ~1988
219970211319821279 ~1989
21997091439941838 ~1988
21997103439942078 ~1988
219976811319860879 ~1989
21997691439953838 ~1988
21998423439968478 ~1988
21999671439993438 ~1988
21999779439995598 ~1988
21999839439996798 ~1988
22000103440002078 ~1988
220003611760028899 ~1990
22000619440012398 ~1988
22000859440017198 ~1988
22001783440035678 ~1988
220022931320137599 ~1989
22002371440047438 ~1988
220023771320142639 ~1989
Exponent Prime Factor Digits Year
22002443440048878 ~1988
22004051440081038 ~1988
22004231440084638 ~1988
22004303145228399910 ~1992
22004459440089198 ~1988
22004903440098078 ~1988
220052411320314479 ~1989
22005311440106238 ~1988
220062411320374479 ~1989
22006511440130238 ~1988
22007123440142478 ~1988
220074376602231119 ~1991
22007603440152078 ~1988
22007963440159278 ~1988
22008179440163598 ~1988
220082691760661539 ~1990
22008383440167678 ~1988
22008443440168878 ~1988
220086611320519679 ~1989
220096135282307139 ~1991
22010519440210398 ~1988
220106413521702579 ~1991
220109211760873699 ~1990
22010951440219038 ~1988
22011371440227438 ~1988
1480
GIMPS The Prime Pages FactorDb.com
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25-04-13