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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
7915079158301598 ~1985
7915099791509918 ~1987
79157511424835199 ~1987
7915801474948078 ~1986
7915867791586718 ~1987
7916057633284578 ~1986
7916081633286498 ~1986
79161313799742899 ~1988
7916459158329198 ~1985
7916551791655118 ~1987
7916591158331838 ~1985
7916879158337598 ~1985
7916963158339278 ~1985
7917011158340238 ~1985
7917181475030878 ~1986
7917191158343838 ~1985
7917473475048398 ~1986
7917599158351998 ~1985
7917659158353198 ~1985
7917863158357278 ~1985
7918153475089198 ~1986
7918199158363998 ~1985
7918511158370238 ~1985
7918613475116798 ~1986
7918811158376238 ~1985
Exp. Prime Factor Digits Year
7918979158379598 ~1985
7919053475143198 ~1986
79190691108669679 ~1987
7919183158383678 ~1985
7919281475156878 ~1986
7919299791929918 ~1987
79193631900647139 ~1988
7919381633550498 ~1986
7919971791997118 ~1987
79200472059212239 ~1988
79200671425612079 ~1987
79201492534447699 ~1988
7920163792016318 ~1987
7920313475218798 ~1986
7920371633629698 ~1986
7920551158411038 ~1985
7920959158419198 ~1985
7921229633698338 ~1986
7921493475289598 ~1986
7921559158431198 ~1985
79218171109054399 ~1987
7921943158438878 ~1985
7922111158442238 ~1985
7922219633777538 ~1986
79222272693557199 ~1988
Exp. Prime Factor Digits Year
7922231158444638 ~1985
7922231633778498
7922303158446078 ~1985
7922483158449678 ~1985
79226531901436739 ~1988
7922821475369278 ~1986
79230431267686899 ~1987
7923059158461198 ~1985
7923131158462638 ~1985
7923281633862498 ~1986
79232991426193839 ~1987
7923371633869698 ~1986
79233972377019119 ~1988
7923991792399118 ~1987
7924019158480398 ~1985
7924019209194101710
79240731109370239 ~1987
7924079158481598 ~1985
7924079633926338
7924739158494798 ~1985
79248791426478239 ~1987
7924883158497678 ~1985
7924991158499838 ~1985
79252371902056899 ~1988
79253771268060339 ~1987
Exp. Prime Factor Digits Year
7925471158509438 ~1985
7925711634056898 ~1986
7925741475544478 ~1986
7925759158515198 ~1985
7925761475545678 ~1986
7925843158516878 ~1985
7925849634067938 ~1986
7925891158517838 ~1985
7926311158526238 ~1985
79264193804681139 ~1988
7926497475589838 ~1986
79265092536482899 ~1988
7926517475591038 ~1986
79267131109739839 ~1987
7927013475620798 ~1986
79270579512468419 ~1989
79272017610112979 ~1989
7927259158545198 ~1985
7927511158550238 ~1985
7927891792789118 ~1987
7927919158558398 ~1985
7927943158558878 ~1985
7928131792813118 ~1987
7928183158563678 ~1985
7928423158568478 ~1985
938
GIMPS The Prime Pages FactorDb.com
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26-06-07