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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
204645376139361119 ~1991
20465099261953267310 ~1993
20465303409306078 ~1988
20465531409310638 ~1988
20465723409314478 ~1988
20465771409315438 ~1988
20466311409326238 ~1988
204663771637310179 ~1990
204664931227989599 ~1989
204667372865343199 ~1990
20467103409342078 ~1988
20467259409345198 ~1988
20467283409345678 ~1988
20468099409361998 ~1988
20468857327501712110 ~1993
20468951409379038 ~1988
204690131228140799 ~1989
204691311637530499 ~1990
204691911637535299 ~1990
20469359409387198 ~1988
204695511637564099 ~1990
204697194912732579 ~1991
20469791409395838 ~1988
20471411409428238 ~1988
20471579409431598 ~1988
Exponent Prime Factor Digits Year
20471963409439278 ~1988
20472191409443838 ~1988
20472299409445998 ~1988
20472839409456798 ~1988
20473163409463278 ~1988
20473331409466638 ~1988
20473451409469038 ~1988
204740112047401119 ~1990
20474411409488238 ~1988
20474651409493038 ~1988
204749176142475119 ~1991
20475491409509838 ~1988
20475683409513678 ~1988
20476331409526638 ~1988
204767331228603999 ~1989
204768011228608079 ~1989
20477423409548478 ~1988
20477519409550398 ~1988
204776091638208739 ~1990
20477903409558078 ~1988
204780371228682239 ~1989
204784396962669279 ~1991
20478539409570798 ~1988
20479583409591678 ~1988
20479859409597198 ~1988
Exponent Prime Factor Digits Year
204802694505659199 ~1991
204811931228871599 ~1989
204814694505923199 ~1991
20481491409629838 ~1988
20481599409631998 ~1988
204816792048167919 ~1990
20481959409639198 ~1988
20482043409640878 ~1988
204821833277149299 ~1990
20482223409644478 ~1988
20482391409647838 ~1988
20482463409649278 ~1988
204834734916033539 ~1991
204853071638824579 ~1990
20485463409709278 ~1988
20485499409709998 ~1988
20485511409710238 ~1988
20486051409721038 ~1988
20486519409730398 ~1988
20486831409736638 ~1988
20487119409742398 ~1988
20487371114729277710 ~1992
20487563409751278 ~1988
20488057245856684110 ~1992
20488103409762078 ~1988
Exponent Prime Factor Digits Year
20488463409769278 ~1988
204886512048865119 ~1990
20488763409775278 ~1988
20488943409778878 ~1988
20489099409781998 ~1988
20489531409790638 ~1988
20489663409793278 ~1988
204900771229404639 ~1989
20490191409803838 ~1988
20490551409811038 ~1988
20491343409826878 ~1988
20491571409831438 ~1988
20491739409834798 ~1988
204920713278731379 ~1990
20492651409853038 ~1988
204930433278886899 ~1990
204936771639494179 ~1990
204936771524729568911
20493719409874398 ~1988
204947171229683039 ~1989
20494763409895278 ~1988
20495339409906798 ~1988
20495963409919278 ~1988
204960971229765839 ~1989
20496263409925278 ~1988
1429
GIMPS The Prime Pages FactorDb.com
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25-04-13