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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
1255949100475938 ~1980
125606325121277 ~1979
125623125124637 ~1979
1256231100498498
1256267100501378 ~1980
1256429477443038 ~1982
1256429678471678
1256531100522498 ~1980
125654325130877 ~1979
125659775395837 ~1980
1256659427264078 ~1982
1256747100539778 ~1980
1256813377043918 ~1981
1256837100546978 ~1980
1256873402199378 ~1982
1257043125704318 ~1980
1257071100565698 ~1980
1257089100567138 ~1980
125713125142637 ~1979
1257239100579138 ~1980
1257281905242338 ~1982
125729375437597 ~1980
1257293176021038
1257313678949038 ~1982
125732325146477 ~1979
Exp. Prime Factor Digits Year
1257331125733118 ~1980
125735925147197 ~1979
1257463301791138 ~1981
125756325151277 ~1979
1257569100605538 ~1980
125772175463277 ~1980
12577874122...366527378632 1996
1257829301878978 ~1981
125787775472637 ~1980
1258087427749598 ~1982
125814175488477 ~1980
125817775490637 ~1980
1258207603939378 ~1982
1258409100672738 ~1980
1258457604059378 ~1982
1258511226531998 ~1981
1258531729947998 ~1982
1258627503450818 ~1982
1258657578982238 ~1982
1258819427998478 ~1982
12589733021535219 ~1984
125903925180797 ~1979
1259053302172738 ~1981
125909925181997 ~1979
1259113503645218 ~1982
Exp. Prime Factor Digits Year
125924325184877 ~1979
1259249100739938 ~1980
125931775559037 ~1980
1259329277052398 ~1981
12594131183848239 ~1983
125954325190877 ~1979
125970175582077 ~1980
1259777100782178 ~1980
1259873302369538 ~1981
125993925198797 ~1979
1260019126001918 ~1980
1260047100803778 ~1980
1260067302416098 ~1981
126013125202637 ~1979
126019125203837 ~1979
1260191100815298
1260317176444398 ~1981
126047375628397 ~1980
1260509176471278 ~1981
1260551100844098 ~1980
1260629907652898 ~1982
1260731403433938 ~1982
1260733277361278 ~1981
1260827100866178 ~1980
126085125217037 ~1979
Exp. Prime Factor Digits Year
1260887100870978 ~1980
126091125218237 ~1979
1261033201765298 ~1981
126113375667997 ~1980
1261171227010798 ~1981
12611772320565699 ~1983
126122325224477 ~1979
1261289100903138 ~1980
1261363201818098 ~1981
1261387126138718 ~1980
126152325230477 ~1979
1261627126162718 ~1980
126169775701837 ~1980
126176325235277 ~1979
1261801504720418 ~1982
1261829100946338 ~1980
126183775710237 ~1980
126194325238877 ~1979
1262071126207118 ~1980
1262087302900898 ~1981
126209925241997 ~1979
1262207227197278 ~1981
126222175733277 ~1980
126223125244637 ~1979
1262269378680718 ~1981
283
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25-04-13