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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
25754999515099998 ~1989
25755479515109598 ~1989
25755563515111278 ~1989
25756019515120398 ~1989
257561512060492099 ~1990
25756583515131678 ~1989
25756859515137198 ~1989
25756931515138638 ~1989
257574411545446479 ~1990
25757591170000100710 ~1993
257579812060638499 ~1990
25758443515168878 ~1989
257584935666868479 ~1991
25758599515171998 ~1989
25759463515189278 ~1989
25759823515196478 ~1989
25760123515202478 ~1989
257609276697841039 ~1992
257625736183017539 ~1992
25762799515255998 ~1989
25762931515258638 ~1989
25763651515273038 ~1989
25763839108208123910 ~1992
25764311515286238 ~1989
25764763103059052110 ~1992
Exponent Prime Factor Digits Year
257651938244861779 ~1992
25765391515307838 ~1989
25765703515314078 ~1989
25765763515315278 ~1989
25766243515324878 ~1989
257663331545979999 ~1990
25766651515333038 ~1989
25767023515340478 ~1989
25767251515345038 ~1989
25767671515353438 ~1989
25768091515361838 ~1989
25768103515362078 ~1989
25768271515365438 ~1989
25768499515369998 ~1989
25769483515389678 ~1989
257696931546181599 ~1990
25770323515406478 ~1989
257704011546224079 ~1990
25770539515410798 ~1989
25770743515414878 ~1989
257710931546265599 ~1990
257713977731419119 ~1992
25772171515443438 ~1989
25772639515452798 ~1989
257727371546364239 ~1990
Exponent Prime Factor Digits Year
25772783515455678 ~1989
25772819515456398 ~1989
25773119515462398 ~1989
25773311515466238 ~1989
25774379515487598 ~1989
257755731546534399 ~1990
25775699515513998 ~1989
257759472577594719 ~1991
257761371546568239 ~1990
25776323515526478 ~1989
25776671515533438 ~1989
257770331546621999 ~1990
25777931515558638 ~1989
25777943515558878 ~1989
257787292062298339 ~1990
25780439515608798 ~1989
25780883515617678 ~1989
25781219515624398 ~1989
257812194640619439
257812571546875439 ~1990
25781771515635438 ~1989
25781963515639278 ~1989
25782059268133413710 ~1993
25782959515659198 ~1989
25782983515659678 ~1989
Exponent Prime Factor Digits Year
25783451515669038 ~1989
25783463515669278 ~1989
25783799515675998 ~1989
25784051515681038 ~1989
25784243515684878 ~1989
25784663515693278 ~1989
257851192062809539 ~1990
25785491515709838 ~1989
25785839515716798 ~1989
25785911515718238 ~1989
25786199515723998 ~1989
25786571515731438 ~1989
25786751515735038 ~1989
257867931547207599 ~1990
257882931547297599 ~1990
257885572063084579 ~1990
25788599515771998 ~1989
25789079515781598 ~1989
25789343515786878 ~1989
25789979515799598 ~1989
25790399515807998 ~1989
25790423515808478 ~1989
257906272063250179 ~1990
25790711515814238 ~1989
25791191515823838 ~1989
1614
GIMPS The Prime Pages FactorDb.com
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25-06-08