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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
128415711027325699 ~1988
12841583256831678 ~1987
12841883256837678 ~1987
12842051256841038 ~1987
12842183256843678 ~1987
12842237770534238 ~1988
12842317770539038 ~1988
128424911284249119 ~1988
12842591256851838 ~1987
12842699256853998 ~1987
12842783256855678 ~1987
12843073770584398 ~1988
12843203256864078 ~1987
12843253770595198 ~1988
12843599256871998 ~1987
12843983256879678 ~1987
12844283256885678 ~1987
12844417770665038 ~1988
12844453770667198 ~1988
12844763256895278 ~1987
12845291256905838 ~1987
128452911027623299
128458391284583919 ~1988
12846131256922638 ~1987
12846133770767998 ~1988
Exponent Prime Factor Digits Year
12846419256928398 ~1987
12846791256935838 ~1987
12847277770836638 ~1988
12847433770845998 ~1988
12847559256951198 ~1987
12847603146462674310 ~1991
12847871256957438 ~1987
12848051256961038 ~1987
128481591027852739 ~1988
128485731798800239 ~1989
128486691027893539 ~1988
128488971027911779 ~1988
12848903256978078 ~1987
12849311256986238 ~1987
12849503256990078 ~1987
12849713770982798 ~1988
12849911256998238 ~1987
128500512313009199 ~1989
12850091257001838 ~1987
128503491028027939 ~1988
12850597771035838 ~1988
128510393084249379 ~1989
12851561771093678 ~1988
12851831257036638 ~1987
12851981771118878 ~1988
Exponent Prime Factor Digits Year
128521371028170979 ~1988
12852877771172638 ~1988
12853133771187998 ~1988
128541471028331779 ~1988
12854483257089678 ~1987
12854561771273678 ~1988
128547411028379299 ~1988
128547472313854479 ~1989
12855131257102638 ~1987
128553073085273699 ~1989
12855851257117038 ~1987
128559671285596719 ~1988
12856021771361278 ~1988
12856163257123278 ~1987
128566391285663919 ~1988
12856691257133838 ~1987
12856703257134078 ~1987
128567571799945999 ~1989
12856859257137198 ~1987
12857843257156878 ~1987
128580171028641379 ~1988
12858743257174878 ~1987
128588473086123299 ~1989
128589293857678719 ~1989
12858971257179438 ~1987
Exponent Prime Factor Digits Year
12859211257184238 ~1987
12860033771601998 ~1988
12860051257201038 ~1987
12860363257207278 ~1987
128604591028836739 ~1988
12860501771630078 ~1988
128605971028847779 ~1988
12860723257214478 ~1987
12860759257215198 ~1987
12860819257216398 ~1987
128612271028898179 ~1988
12861281771676878 ~1988
128613791286137919 ~1988
128615172057842739 ~1989
12861743257234878 ~1987
128623014887674399 ~1990
12862823257256478 ~1987
12862901771774078 ~1988
128631132829884879 ~1989
12863297771797838 ~1988
128633532058136499 ~1989
12863723257274478 ~1987
128639273344621039 ~1989
12864191257283838 ~1987
12864541771872478 ~1988
1218
GIMPS The Prime Pages FactorDb.com
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26-03-15