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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
2555099204407938 ~1983
25552631635368339 ~1985
2555353562177678 ~1984
2555429204434338 ~1983
2555591204447298 ~1983
255571151114237 ~1981
2556019255601918 ~1983
255602351120477 ~1981
2556061562333438 ~1984
2556179204494338 ~1983
25564571636132499 ~1985
2556487613556898 ~1984
255650351130077 ~1981
2556569357919678 ~1983
2556569613576578
2556607460189278 ~1983
255680351136077 ~1981
2556857153411438 ~1982
2556857204548578
2556913562520878 ~1984
2557277153436638 ~1982
2557297409167538 ~1983
2557333409173298 ~1983
25575613836341519 ~1986
2557663255766318 ~1983
Exp. Prime Factor Digits Year
2557781153466878 ~1982
2557781767334318
2557813153468798 ~1982
25578131381219039
255782351156477 ~1981
255793151158637 ~1981
2557967665071438 ~1984
2558021972047998 ~1984
25581312097667439 ~1985
2558173153490398 ~1982
25582195730410579 ~1986
2558287255828718 ~1983
255841151168237 ~1981
2558419255841918 ~1983
2558581409372978 ~1983
2558683409389298 ~1983
2558791409406578 ~1983
2558909972385438 ~1984
255907151181437 ~1981
2559077153544638 ~1982
2559077358270798
2559079614178978 ~1984
25591211842567139 ~1985
25591911279595519 ~1984
255938351187677 ~1981
Exp. Prime Factor Digits Year
2559437153566238 ~1982
2559461153567678 ~1982
2559553153573198 ~1982
2559619460731438 ~1983
255973151194637 ~1981
25597691843033699 ~1985
25598272303844319 ~1985
255983951196797 ~1981
2559839460771038
2560039460807038 ~1983
2560367204829378 ~1983
2560721204857698 ~1983
2560793819453778 ~1984
2560823614597538 ~1984
2560891409742578 ~1983
256097951219597 ~1981
2560997204879778 ~1983
256106351221277 ~1981
256123151224637 ~1981
2561411665966878 ~1984
25614117223179039
256142351228477 ~1981
256165151233037 ~1981
2561653153699198 ~1982
2561737153704238 ~1982
Exp. Prime Factor Digits Year
25617431024697219 ~1984
25618071280903519 ~1984
2561857614845698 ~1984
256196351239277 ~1981
256201151240237 ~1981
256202351240477 ~1981
2562097409935538 ~1983
256223951244797 ~1981
25622534868280719 ~1986
2562317204985378 ~1983
25625512306295919 ~1985
2562557205004578 ~1983
256261151252237 ~1981
2562737358783198 ~1983
2562943410070898 ~1983
2563003410080498 ~1983
2563007615121698 ~1984
2563013153780798 ~1982
2563117153787038 ~1982
2563147410103538 ~1983
2563193153791598 ~1982
2563667615280098 ~1984
256375151275037 ~1981
256376351275277 ~1981
2563777410204338 ~1983
462
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26-02-08