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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
7974779637982338 ~1986
7975139159502798 ~1985
79752671276042739 ~1987
79754231276067699 ~1987
7975559638044738 ~1986
7975741478544478 ~1986
7975777478546638 ~1986
7975889638071138 ~1986
7976183159523678 ~1985
7976203965120563110 ~1992
7976231159524638 ~1985
7976651638132098 ~1986
7976693478601598 ~1986
7976861478611678 ~1986
7977133478627998 ~1986
7977157478629438 ~1986
7977191159543838 ~1985
7977197478631838 ~1986
7977197638175778
7977241478634478 ~1986
7977521478651278 ~1986
7977731159554638 ~1985
7977779159555598 ~1985
7977863159557278 ~1985
7977899159557998 ~1985
Exp. Prime Factor Digits Year
7978169638253538 ~1986
7978301638264098 ~1986
7978319159566398 ~1985
7978331159566638 ~1985
7978637478718238 ~1986
7978637638290978
7979197478751838 ~1986
7979201478752078 ~1986
7979243159584878 ~1985
7979351159587038 ~1985
7979533478771998 ~1986
79795491915091779 ~1988
7979567638365378 ~1986
7979771638381698 ~1986
7979891638391298 ~1986
7980179159603598 ~1985
7980239638419138 ~1986
7980443159608878 ~1985
79806291117288079 ~1987
7980683159613678 ~1985
7980911159618238 ~1985
79810871276973939 ~1987
7981283159625678 ~1985
7981481478888878 ~1986
7981553478893198 ~1986
Exp. Prime Factor Digits Year
7981817478909038 ~1986
79818471436732479 ~1987
7981937638554978 ~1986
7982141478928478 ~1986
79821412554285139
7982153478929198 ~1986
7982203798220318 ~1987
79825673831632179 ~1988
7982651159653038 ~1985
7982969638637538 ~1986
7983037478982238 ~1986
7983119159662398 ~1985
7983179159663598 ~1985
7983449638675938 ~1986
7983539159670798 ~1985
7983551159671038 ~1985
7983571798357118 ~1987
7983797479027838 ~1986
7983851159677038 ~1985
79842612395278319 ~1988
7984331159686638 ~1985
7984583159691678 ~1985
7984673479080398 ~1986
7984793479087598 ~1986
79848914631236799 ~1988
Exp. Prime Factor Digits Year
7984957166087105710 ~1990
7985123159702478 ~1985
7985413479124798 ~1986
7985489638839138 ~1986
7985641479138478 ~1986
7986317638905378 ~1986
7986371159727438 ~1985
7986599638927938 ~1986
79866593354396799 ~1988
79867311437611599 ~1987
7986739798673918 ~1987
7987019159740398 ~1985
7987037479222238 ~1986
7987241638979298 ~1986
79873731118232239 ~1987
7987403159748078 ~1985
7987559159751198 ~1985
7987751159755038 ~1985
7988063159761278 ~1985
7988339159766798 ~1985
79884592556306899 ~1988
7988573479314398 ~1986
79885791437944239 ~1987
7988723159774478 ~1985
7988801639104098 ~1986
895
GIMPS The Prime Pages FactorDb.com
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25-05-04