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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
25678739513574798 ~1989
25678811513576238 ~1989
25679999513599998 ~1989
256799994622399839
25680023513600478 ~1989
25681031513620638 ~1989
25681079513621598 ~1989
25681151513623038 ~1989
25681451513629038 ~1989
25681499513629998 ~1989
25682711513654238 ~1989
25682963513659278 ~1989
25682999513659998 ~1989
25683071513661438 ~1989
256835092054680739 ~1990
256836892054695139 ~1990
256837314623071599 ~1991
25683803513676078 ~1989
25684619513692398 ~1989
25684811513696238 ~1989
256849636164391139 ~1991
25685063513701278 ~1989
256851172054809379 ~1990
25685519513710398 ~1989
25685531513710638 ~1989
Exponent Prime Factor Digits Year
256858971541153839 ~1990
256859692054877539 ~1990
256861211541167279 ~1990
25686263513725278 ~1989
256864331541185999 ~1990
25687523513750478 ~1989
25687631513752638 ~1989
25687691513753838 ~1989
256880112568801119 ~1991
256886811541320879 ~1990
25688699513773998 ~1989
256896411541378479 ~1990
25689959513799198 ~1989
25690069102760276110 ~1992
25690079513801598 ~1989
25690139513802798 ~1989
25690751513815038 ~1989
25690991513819838 ~1989
256910112569101119 ~1991
25691639513832798 ~1989
256917912569179119 ~1991
256918632569186319 ~1991
25692059513841198 ~1989
25692239513844798 ~1989
25692323513846478 ~1989
Exponent Prime Factor Digits Year
25692539513850798 ~1989
25692743513854878 ~1989
25693163513863278 ~1989
25693319513866398 ~1989
256935594624840639 ~1991
25694111513882238 ~1989
256942672055541379 ~1990
25695599513911998 ~1989
25696031513920638 ~1989
25696271513925438 ~1989
25696823513936478 ~1989
25697411513948238 ~1989
256974371541846239 ~1990
25697663513953278 ~1989
25697891513957838 ~1989
25698131513962638 ~1989
25698251513965038 ~1989
256990619765643199 ~1992
25699259513985198 ~1989
256998892055991139 ~1990
25700219514004398 ~1989
25700231514004638 ~1989
257006112570061119 ~1991
25700723514014478 ~1989
257007771542046639 ~1990
Exponent Prime Factor Digits Year
25701359514027198 ~1989
25702619514052398 ~1989
25702811514056238 ~1989
25702823514056478 ~1989
25702931514058638 ~1989
25703003514060078 ~1989
25703663514073278 ~1989
25703819514076398 ~1989
25704071514081438 ~1989
25704383514087678 ~1989
25704491514089838 ~1989
257045171542271039 ~1990
25705523514110478 ~1989
25705871514117438 ~1989
25705931514118638 ~1989
25706423514128478 ~1989
257066411542398479 ~1990
25706783514135678 ~1989
257069531542417199 ~1990
257071131542426799 ~1990
257076531542459199 ~1990
25708211514164238 ~1989
25708223514164478 ~1989
25709003514180078 ~1989
25709063514181278 ~1989
1595
GIMPS The Prime Pages FactorDb.com
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25-04-13