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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
12807131256142638 ~1987
12807191256143838 ~1987
128072331793012639 ~1989
12807563256151278 ~1987
12807601768456078 ~1988
12807721768463278 ~1988
128077991280779919 ~1988
12807857768471438 ~1988
128078591280785919 ~1988
12808091256161838 ~1987
12808283256165678 ~1987
12808319256166398 ~1987
12808511256170238 ~1987
12808583256171678 ~1987
12808739256174798 ~1987
12808979256179598 ~1987
12809101768546078 ~1988
12809557768573438 ~1988
12810071256201438 ~1987
12810191256203838 ~1987
12810353768621198 ~1988
12811343256226878 ~1987
12811499256229998 ~1987
12811511256230238 ~1987
12811679256233598 ~1987
Exponent Prime Factor Digits Year
12811703256234078 ~1987
128119272049908339 ~1989
12811937768716238 ~1988
128119373843581119
12812183256243678 ~1987
12812291256245838 ~1987
12812963115316667110 ~1991
12813023256260478 ~1987
128135232050163699 ~1989
12813901768834078 ~1988
12813959256279198 ~1987
12813973768838398 ~1988
12814237768854238 ~1988
12815017768901038 ~1988
12815137768908238 ~1988
128156111281561119 ~1988
128158393075801379 ~1989
12816179256323598 ~1987
12816437768986238 ~1988
12816457768987438 ~1988
128164991281649919 ~1988
128166072306989279 ~1989
128171511025372099 ~1988
12817733769063998 ~1988
12817823256356478 ~1987
Exponent Prime Factor Digits Year
12817943256358878 ~1987
12818231256364638 ~1987
12818699256373998 ~1987
128189292820164399 ~1989
12819061769143678 ~1988
12819197769151838 ~1988
128194392307499039 ~1989
12819923256398478 ~1987
12819959256399198 ~1987
12820799256415998 ~1987
128207991025663939
12821293769277598 ~1988
128214771025718179 ~1988
12821531256430638 ~1987
12821581769294878 ~1988
12821701769302078 ~1988
12821717769303038 ~1988
12822059256441198 ~1987
128220671282206719 ~1988
12822203256444078 ~1987
12822503256450078 ~1987
12822599256451998 ~1987
128230799489078479 ~1990
12823229164137331310 ~1991
12823453769407198 ~1988
Exponent Prime Factor Digits Year
12823493769409598 ~1988
12823717769423038 ~1988
12823859256477198 ~1987
128241671282416719 ~1988
12824303256486078 ~1987
128243471282434719 ~1988
12824543256490878 ~1987
12824881769492878 ~1988
12824891256497838 ~1987
12825023256500478 ~1987
12825083256501678 ~1987
12825623256512478 ~1987
12826631256532638 ~1987
12826811256536238 ~1987
12827159256543198 ~1987
12827233769633998 ~1988
12827291256545838 ~1987
12827411256548238 ~1987
12827693769661598 ~1988
12827891256557838 ~1987
12827953769677198 ~1988
12828601769716078 ~1988
128286192309151439 ~1989
12828719256574398 ~1987
128291296157981939 ~1990
1221
GIMPS The Prime Pages FactorDb.com
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26-04-05