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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
7205771144115438 ~1985
7205843144116878 ~1985
7206191144123838 ~1985
7206197576495778 ~1986
7206203144124078 ~1985
72069431153110899 ~1987
72069772162093119 ~1987
7207037576562978 ~1986
7207181576574498 ~1986
7207331576586498 ~1986
7207619144152398 ~1985
7207661432459678 ~1986
7207757432465438 ~1986
7207883144157678 ~1985
7207919144158398 ~1985
7208317432499038 ~1986
7208711144174238 ~1985
72087171009220399 ~1987
7208759144175198 ~1985
7209259720925918 ~1986
72095331009334639 ~1987
7209539144190798 ~1985
7209551144191038 ~1985
7209757432585438 ~1986
7209877432592638 ~1986
Exp. Prime Factor Digits Year
7210061576804898 ~1986
7210433432625998 ~1986
7210453432627198 ~1986
7210663721066318 ~1986
7210751144215038 ~1985
7210811144216238 ~1985
7210943144218878 ~1985
7210991144219838 ~1985
72110112884404419 ~1988
7211119721111918 ~1986
7211201432672078 ~1986
7211201576896098
7211273432676398 ~1986
7211291576903298 ~1986
7211333432679998 ~1986
7211381432682878 ~1986
7211639576931138 ~1986
7211843144236878 ~1985
7211977432718638 ~1986
72121691730920579 ~1987
7212173432730398 ~1986
7212253432735198 ~1986
7212323144246478 ~1985
7212719577017538 ~1986
7212791144255838 ~1985
Exp. Prime Factor Digits Year
7212791577023298
7212839144256798 ~1985
7212899144257998 ~1985
7213441432806478 ~1986
7213543721354318 ~1986
72135671154170739 ~1987
7213571577085698 ~1986
7213751144275038 ~1985
7213847577107778 ~1986
72140631875656399 ~1987
7214101432846078 ~1986
7214183144283678 ~1985
7214279144285598 ~1985
7214393432863598 ~1986
7214843144296878 ~1985
7214917432895038 ~1986
72149513607475519 ~1988
7215127721512718 ~1986
7215223721522318 ~1986
7215449577235938 ~1986
7215547721554718 ~1986
7215553432933198 ~1986
7216091577287298 ~1986
7216199144323998 ~1985
7216213432972798 ~1986
Exp. Prime Factor Digits Year
72162471298924479 ~1987
7216343144326878 ~1985
7216439144328798 ~1985
7216787577342978 ~1986
72169871154717939 ~1987
7217279144345598 ~1985
7217407721740718 ~1986
7217657433059438 ~1986
72177313031447039 ~1988
72177471732259299 ~1987
7217753433065198 ~1986
7217939144358798 ~1985
7218053433083198 ~1986
7218181433090878 ~1986
7218269577461538 ~1986
7218433433105998 ~1986
7218637433118238 ~1986
72189292743193039 ~1988
7219139144382798 ~1985
7219391144387838 ~1985
7219483721948318 ~1986
7219519721951918 ~1986
7219703144394078 ~1985
7219871577589698 ~1986
7220407722040718 ~1986
878
GIMPS The Prime Pages FactorDb.com
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26-03-08