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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
21042383420847678 ~1988
21042419420848398 ~1988
210424791683398339 ~1990
21042839420856798 ~1988
21043391420867838 ~1988
210448311683586499 ~1990
210448331262689999 ~1989
21045263420905278 ~1988
21045539420910798 ~1988
21045599420911998 ~1988
210462171262773039 ~1989
21046859420937198 ~1988
21047051420941038 ~1988
21047303420946078 ~1988
210474016314220319 ~1991
210479691683837539 ~1990
21048133265206475910 ~1993
21048239420964798 ~1988
21048959420979198 ~1988
210489913367838579 ~1990
21049019420980398 ~1988
21049271420985438 ~1988
210493331262959999 ~1989
21049499420989998 ~1988
21049643420992878 ~1988
Exponent Prime Factor Digits Year
21050231421004638 ~1988
21050279421005598 ~1988
21050303421006078 ~1988
21050339421006798 ~1988
210508331263049999 ~1989
21051479421029598 ~1988
21051599421031998 ~1988
210517611684140899 ~1990
210520398420815619 ~1991
21052079421041598 ~1988
21052847138948790310 ~1992
210528772947402799 ~1990
21052943421058878 ~1988
21054263421085278 ~1988
21054311421086238 ~1988
21054419421088398 ~1988
21054431421088638 ~1988
21054779421095598 ~1988
210550331263301999 ~1989
210552771684422179 ~1990
21055343421106878 ~1988
21055631421112638 ~1988
21055679421113598 ~1988
21055763421115278 ~1988
210557993790043839 ~1991
Exponent Prime Factor Digits Year
210558134632278879 ~1991
21055871421117438 ~1988
21056039421120798 ~1988
21056543421130878 ~1988
210565491684523939 ~1990
21056927155821259910 ~1992
21057083421141678 ~1988
21057299421145998 ~1988
210574311684594499 ~1990
210574671684597379 ~1990
21057479421149598 ~1988
21057563421151278 ~1988
210579291684634339 ~1990
21058211421164238 ~1988
21058283421165678 ~1988
21058343421166878 ~1988
21058619421172398 ~1988
210589311684714499 ~1990
21059231421184638 ~1988
21059411421188238 ~1988
21059669421193380110 ~1993
21059939421198798 ~1988
21060359421207198 ~1988
21060731421214638 ~1988
21061451421229038 ~1988
Exponent Prime Factor Digits Year
21061471151642591310 ~1992
21061619421232398 ~1988
21061739421234798 ~1988
210620811684966499 ~1990
21062543421250878 ~1988
21062999421259998 ~1988
21063071421261438 ~1988
21063131421262638 ~1988
21063803421276078 ~1988
21064073505537752110 ~1993
210643131263858799 ~1989
21064523421290478 ~1988
210651531263909199 ~1989
21065351421307038 ~1988
210654891685239139 ~1990
21066359421327198 ~1988
21066443421328878 ~1988
210665811685326499 ~1990
210666975056007299 ~1991
21066719421334398 ~1988
210669313370708979 ~1990
21066959421339198 ~1988
21067043421340878 ~1988
210673496320204719 ~1991
21067391421347838 ~1988
1464
GIMPS The Prime Pages FactorDb.com
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25-06-08