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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
6187477371248638 ~1985
6187637866269198 ~1986
6187661371259678 ~1985
61877712598863839 ~1987
6187799123755998 ~1984
6187859123757198 ~1984
6187871123757438 ~1984
6188009866321278 ~1986
6188059618805918 ~1986
6188297371297838 ~1985
6188401990144178 ~1986
6188531123770638 ~1984
6188789157195240710 ~1989
6189077371344638 ~1985
6189083123781678 ~1984
6189251123785038 ~1984
6189299123785998 ~1984
6189539123790798 ~1984
6189593371375598 ~1985
6189671123793438 ~1984
6189727618972718 ~1986
6189983123799678 ~1984
6190259123805198 ~1984
6190319123806398 ~1984
6190423619042318 ~1986
Exp. Prime Factor Digits Year
61904691857140719 ~1987
6190799123815998 ~1984
6190991123819838 ~1984
6191279495302338 ~1986
6191411123828238 ~1984
6191461371487678 ~1985
6191491990638578 ~1986
6191597371495838 ~1985
6191743619174318 ~1986
6192161371529678 ~1985
6192337371540238 ~1985
6192449866942878 ~1986
6192523619252318 ~1986
61927071486249699 ~1987
6192749495419938 ~1986
6192779123855598 ~1984
61927991114703839 ~1986
6192821495425698 ~1986
6192869495429538 ~1986
6192871990859378 ~1986
61930071114741279 ~1986
6193093371585598 ~1985
6193381371602878 ~1985
61938972973070579 ~1987
6194099123881998 ~1984
Exp. Prime Factor Digits Year
61941193964236179 ~1988
61941471610478239 ~1987
61943874088295439 ~1988
6194483123889678 ~1984
6194819123896398 ~1984
6194879123897598 ~1984
6194879495590338
61949115451521699 ~1988
6194939123898798 ~1984
6195419123908398 ~1984
6195481360576994310 ~1990
6195601371736078 ~1985
6195823619582318 ~1986
6195863123917278 ~1984
6196027619602718 ~1986
6196273371776398 ~1985
6196277371776638 ~1985
6196397495711778 ~1986
6196417371785038 ~1985
6196439123928798 ~1984
6196537991445938 ~1986
61965711982902739 ~1987
61966691363267199 ~1987
61967391487217379 ~1987
6196819619681918 ~1986
Exp. Prime Factor Digits Year
6197099123941998 ~1984
61972511115505199 ~1986
6197431991588978 ~1986
6197641371858478 ~1985
6197651495812098 ~1986
6197717495817378 ~1986
6197963123959278 ~1984
6198119123962398 ~1984
6198209495856738 ~1986
6198239123964798 ~1984
61984638429909699 ~1989
6198497867789598 ~1986
6198587495886978 ~1986
6198653142569019110 ~1989
6198677495894178 ~1986
6198901371934078 ~1985
6199031123980638 ~1984
6199321371959278 ~1985
6199337867907198 ~1986
6199399619939918 ~1986
6199547495963778 ~1986
6199559123991198 ~1984
6199601371976078 ~1985
6199691123993838 ~1984
6199691495975298
805
GIMPS The Prime Pages FactorDb.com
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26-04-05