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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
24928511445853599 ~1985
2493041149582478 ~1982
249308349861677 ~1981
2493089199447138 ~1982
2493107199448578 ~1982
2493259448786638 ~1983
2493331398932978 ~1983
249338349867677 ~1981
249344349868877 ~1981
249347949869597 ~1981
2493479448826238
249356349871277 ~1981
2493653349111438 ~1983
2493653748095918
249371949874397 ~1981
249392349878477 ~1981
249398349879677 ~1981
2494061947743198 ~1984
2494081149644878 ~1982
2494273598625538 ~1984
2494321149659278 ~1982
249437949887597 ~1981
24944239379030499 ~1987
2494447249444718 ~1983
249446349889277 ~1981
Exp. Prime Factor Digits Year
2494469199557538 ~1982
2494571199565698 ~1982
2494781199582498 ~1982
249488349897677 ~1981
249493149898637 ~1981
2495071249507118 ~1983
249545949909197 ~1981
2495567199645378 ~1982
2495767598984098 ~1984
249577149915437 ~1981
2495861149751678 ~1982
2495981149758878 ~1982
2496257349475998 ~1983
2496401948632398 ~1984
249650349930077 ~1981
2496541149792478 ~1982
2496553149793198 ~1982
2496553549241678
2496691249669118 ~1983
249677949935597 ~1981
24968693595491379 ~1985
249691149938237 ~1981
2497097948896878 ~1984
2497211199776898 ~1982
2497217149833038 ~1982
Exp. Prime Factor Digits Year
2497349349628878 ~1983
2497357149841438 ~1982
2497381149842878 ~1982
2497423249742318 ~1983
2497457199796578 ~1982
24974771198788979 ~1984
2497633149857998 ~1982
2497633749289918
249773949954797 ~1981
249775149955037 ~1981
249793149958637 ~1981
2497939449629038 ~1983
249799149959837 ~1981
249812349962477 ~1981
2498137599552898 ~1984
249818349963677 ~1981
2498213149892798 ~1982
249823149964637 ~1981
2498231449681598
249833949966797 ~1981
2498893149933598 ~1982
2498957149937438 ~1982
2499137199930978 ~1982
249917949983597 ~1981
2499193149951598 ~1982
Exp. Prime Factor Digits Year
2499197199935778 ~1982
2499311199944898 ~1982
249944349988877 ~1981
2499509599882178 ~1984
249955149991037 ~1981
2499667449940078 ~1983
249977949995597 ~1981
249986349997277 ~1981
2500067200005378 ~1982
2500117150007038 ~1982
25001591800114499 ~1985
2500163650042398 ~1984
2500213400034098 ~1983
2500273150016398 ~1982
2500301150018078 ~1982
2500331650086078 ~1984
2500439200035138 ~1982
250055950011197 ~1981
2500621150037278 ~1982
2500651250065118 ~1983
2500709200056738 ~1982
2500937150056238 ~1982
2500999250099918 ~1983
2501143600274338 ~1984
2501189200095138 ~1982
450
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25-10-26