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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
12849503256990078 ~1987
12849713770982798 ~1988
12849911256998238 ~1987
128500512313009199 ~1989
12850091257001838 ~1987
128503491028027939 ~1988
12850597771035838 ~1988
128510393084249379 ~1989
12851561771093678 ~1988
12851831257036638 ~1987
12851981771118878 ~1988
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
Exponent Prime Factor Digits Year
128566391285663919 ~1988
12856691257133838 ~1987
12856703257134078 ~1987
128567571799945999 ~1989
12856859257137198 ~1987
12857843257156878 ~1987
128580171028641379 ~1988
12858743257174878 ~1987
128588473086123299 ~1989
128589293857678719 ~1989
12858971257179438 ~1987
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
Exponent Prime Factor Digits Year
12861743257234878 ~1987
128623014887674399 ~1990
12862823257256478 ~1987
12862901771774078 ~1988
12863297771797838 ~1988
128633532058136499 ~1989
12863723257274478 ~1987
128639273344621039 ~1989
12864191257283838 ~1987
12864541771872478 ~1988
12864623257292478 ~1987
128653099263022499 ~1990
12866219257324398 ~1987
12866351257327038 ~1987
128668031286680319 ~1988
12866831257336638 ~1987
12866873772012398 ~1988
128669391029355139 ~1988
12867059257341198 ~1987
128672232058755699 ~1989
12867311257346238 ~1987
12867443257348878 ~1987
12867611257352238 ~1987
12867719257354398 ~1987
12867779257355598 ~1987
Exponent Prime Factor Digits Year
128677791029422339
128678391029427139 ~1988
12868319257366398 ~1987
12868343257366878 ~1987
12868463257369278 ~1987
128689911029519299 ~1988
12869413772164798 ~1988
128695671029565379 ~1988
128699334118378579 ~1989
128700791287007919 ~1988
12870541772232478 ~1988
12870899257417998 ~1987
12870971257419438 ~1987
12871451257429038 ~1987
12871583257431678 ~1987
12871613772296798 ~1988
128716311029730499 ~1988
128717511029740099 ~1988
12872003257440078 ~1987
12872039257440798 ~1987
12872423257448478 ~1987
12872933772375998 ~1988
12873041772382478 ~1988
12873083257461678 ~1987
12873197110709494310 ~1991
1190
GIMPS The Prime Pages FactorDb.com
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25-11-02