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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.
Exp. Prime Factor Digits Year
2645809793742718 ~1984
264584352916877 ~1981
26458491005422639 ~1984
2645933635023938 ~1984
26459771693425299 ~1985
2645987635036898 ~1984
264607152921437 ~1981
2646227476320878 ~1983
26462331481890499 ~1985
264659952931997 ~1981
2646887635252898 ~1984
2646901158814078 ~1982
2646937158816238 ~1982
264703152940637 ~1981
2647097211767778 ~1983
26470972911806719
264725952945197 ~1981
2647331211786498 ~1983
26473431482512099 ~1985
2647367476526078 ~1983
26473911270747699 ~1985
2647397158843838 ~1982
2647481158848878 ~1982
264755952951197 ~1981
264764352952877 ~1981
Exp. Prime Factor Digits Year
2647751688415278 ~1984
264776352955277 ~1981
2647763635463138
2647769794330718 ~1984
2647873158872398 ~1982
264791952958397 ~1981
2648183688527598 ~1984
26482571218198239 ~1984
264835152967037 ~1981
264836352967277 ~1981
2648479635634978 ~1984
2648533158911998 ~1982
264887952977597 ~1981
2649067423850738 ~1983
264932352986477 ~1981
2649329370906078 ~1983
2649497158969838 ~1982
26494991536709439 ~1985
2649503688870798 ~1984
2649541158972478 ~1982
2649611476929998 ~1983
2649709635930178 ~1984
26497271271868979 ~1985
264985152997037 ~1981
2649851211988098
Exp. Prime Factor Digits Year
2649863635967138 ~1984
2649863847956178
2649989370998478 ~1983
2650163636039138 ~1984
265021153004237 ~1981
2650229848073298 ~1984
26502591113108799 ~1984
2650337159020238 ~1982
2650357159021438 ~1982
2650387424061938 ~1983
265046353009277 ~1981
2650573159034398 ~1982
2650577159034638 ~1982
2650787636188898 ~1984
2651053636252738 ~1984
265106353021277 ~1981
265111153022237 ~1981
2651191477214398 ~1983
26513593817956979 ~1986
2651443636346338 ~1984
265148353029677 ~1981
2651489371208478 ~1983
2651513159090798 ~1982
2651611265161118 ~1983
2651629583358398 ~1984
Exp. Prime Factor Digits Year
2651669371233678 ~1983
265169953033997 ~1981
2651717159103038 ~1982
2651777159106638 ~1982
265178353035677 ~1981
2651837383985997710 ~1988
2651893159113598 ~1982
2651959477352638 ~1983
265213153042637 ~1981
2652161212172898 ~1983
265217953043597 ~1981
2652233159133998 ~1982
2652367265236718 ~1983
26525691007976239 ~1984
2652607424417138 ~1983
265271953054397 ~1981
26527193236317199
265291153058237 ~1981
2652997424479538 ~1983
2653111424497778 ~1983
2653333159199998 ~1982
2653499477629838 ~1983
26535491432916479 ~1985
265357153071437 ~1981
265358353071677 ~1981
465
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25-09-07