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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
7635899152717998 ~1985
7636093458165598 ~1986
7636931610954498 ~1986
7637011763701118 ~1986
7637033458221998 ~1986
7637243152744878 ~1985
76373231832957539 ~1987
7637351152747038 ~1985
76375991374767839 ~1987
7637803763780318 ~1986
7637977458278638 ~1986
7638167611053378 ~1986
7638173458290398 ~1986
7638517458311038 ~1986
7638557458313438 ~1986
76386412444365139 ~1988
7638941458336478 ~1986
7639271611141698 ~1986
7639721611177698 ~1986
7639739152794798 ~1985
7639759763975918 ~1986
7639799152795998 ~1985
7639883152797678 ~1985
7640141611211298 ~1986
7640183152803678 ~1985
Exp. Prime Factor Digits Year
7640351152807038 ~1985
7640357611228578 ~1986
7640377458422638 ~1986
76407071375327279 ~1987
76407072597840399
7640723152814478 ~1985
7640821458449278 ~1986
76409331069730639 ~1987
7641071611285698 ~1986
7641131152822638 ~1985
7641197458471838 ~1986
7641241458474478 ~1986
7641353458481198 ~1986
7641377611310178 ~1986
7641479152829598 ~1985
7641611611328898 ~1986
7641671152833438 ~1985
76417093056683619 ~1988
7641839152836798 ~1985
7642139152842798 ~1985
7642403152848078 ~1985
7642577458554638 ~1986
7642681458560878 ~1986
7642931152858638 ~1985
7642963764296318 ~1986
Exp. Prime Factor Digits Year
7643033458581998 ~1986
7643039152860798 ~1985
7643473458608398 ~1986
76435331222965299 ~1987
7643543152870878 ~1985
7643717458623038 ~1986
7643807611504578 ~1986
7643879611510338 ~1986
76441573057662819 ~1988
76443531834644739 ~1987
7644433458665998 ~1986
7644803152896078 ~1985
7644997458699838 ~1986
7645433458725998 ~1986
7645577611646178 ~1986
7645663764566318 ~1986
7645753458745198 ~1986
7646033458761998 ~1986
76460831223373299 ~1987
76461292293838719 ~1988
7646231152924638 ~1985
76462632599729439 ~1988
7646279152925598 ~1985
7646293458777598 ~1986
7646501458790078 ~1986
Exp. Prime Factor Digits Year
7646519152930398 ~1985
7646843152936878 ~1985
7646861458811678 ~1986
7646993458819598 ~1986
7647071152941438 ~1985
76473471835363299 ~1987
76473771070632799 ~1987
7647587611806978 ~1986
7647839611827138 ~1986
7647881458872878 ~1986
7648019611841538 ~1986
7648031152960638 ~1985
7648057458883438 ~1986
76481637342236499 ~1989
7648327764832718 ~1986
7648391152967838 ~1985
7648439611875138 ~1986
7648499611879938 ~1986
7648703152974078 ~1985
7648757611900578 ~1986
7648897458933838 ~1986
7649021458941278 ~1986
7649231152984638 ~1985
7649413458964798 ~1986
7649459152989198 ~1985
880
GIMPS The Prime Pages FactorDb.com
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25-07-08