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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
401955532411733199 ~1992
40195751803915038 ~1990
401974197235535439 ~1993
40198703803974078 ~1990
40199651803993038 ~1990
401998212411989279 ~1992
40200203804004078 ~1990
40200731804014638 ~1990
402009473216075779 ~1992
40201103804022078 ~1990
40202243804044878 ~1990
40203851804077038 ~1990
40204091804081838 ~1990
402041397236745039 ~1993
40205183804103678 ~1990
402054412412326479 ~1992
402057012412342079 ~1992
40206203804124078 ~1990
40206539804130798 ~1990
40207991804159838 ~1990
402085932412515599 ~1992
40208951804179038 ~1990
402094193216753539 ~1992
40210679804213598 ~1990
402107176433714739 ~1993
Exponent Prime Factor Digits Year
40210871804217438 ~1990
40210931804218638 ~1990
40211459804229198 ~1990
40214411804288238 ~1990
402150372412902239 ~1992
40215671804313438 ~1990
40216763804335278 ~1990
40217063804341278 ~1990
40217711804354238 ~1990
40217951804359038 ~1990
40218037740011880910 ~1995
402181274021812719 ~1992
40218779804375598 ~1990
40220039804400798 ~1990
402205276435284339 ~1993
40220639804412798 ~1990
40221059804421198 ~1990
40221743804434878 ~1990
40222433321779464110 ~1994
402229332413375999 ~1992
402233116435729779 ~1993
40223831804476638 ~1990
40223951804479038 ~1990
40224599804491998 ~1990
402246972413481839 ~1992
Exponent Prime Factor Digits Year
40225103804502078 ~1990
402252436436038899 ~1993
40225379804507598 ~1990
40225583804511678 ~1990
40227179804543598 ~1990
402271972413631839 ~1992
402274132413644799 ~1992
40227419804548398 ~1990
40228439804568798 ~1990
40228789893079115910 ~1995
40229291804585838 ~1990
402296273218370179 ~1992
40231343804626878 ~1990
40231811804636238 ~1990
40232651804653038 ~1990
40234703804694078 ~1990
40234871804697438 ~1990
402352816437644979 ~1993
40236323804726478 ~1990
40236551804731038 ~1990
402368932414213599 ~1992
402371572414229439 ~1992
40237343804746878 ~1990
40238459804769198 ~1990
402385572414313439 ~1992
Exponent Prime Factor Digits Year
40238771804775438 ~1990
40240019804800398 ~1990
402404332414425999 ~1992
40240703804814078 ~1990
402418332414509999 ~1992
40241843804836878 ~1990
402431873219454979 ~1992
40243211804864238 ~1990
40243631804872638 ~1990
40243739804874798 ~1990
402440412414642479 ~1992
402448876439181939 ~1993
40245539804910798 ~1990
40245661120736983110 ~1993
40246691804933838 ~1990
40246931804938638 ~1990
40246991804939838 ~1990
40247639804952798 ~1990
402476575634671999 ~1992
402484073219872579 ~1992
402494834024948319 ~1992
402498372245940904711 ~1996
40250123805002478 ~1990
402503513220028099 ~1992
40250363805007278 ~1990
1956
GIMPS The Prime Pages FactorDb.com
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25-07-08