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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
12138097728285838 ~1988
121381272184862879 ~1989
12138551242771038 ~1986
12138683242773678 ~1986
12138803242776078 ~1986
12138851242777038 ~1986
12139103242782078 ~1986
121398478012299039 ~1990
12139861728391678 ~1988
121399136798351299 ~1990
12139943242798878 ~1986
12140081728404878 ~1988
12140291242805838 ~1986
12140461728427678 ~1988
12140651242813038 ~1986
12141047971283778 ~1988
12141191242823838 ~1986
12141317728479038 ~1988
121413775827860979 ~1990
12141443242828878 ~1986
12141599167554066310 ~1991
12141851242837038 ~1986
12142439242848798 ~1986
12142499242849998 ~1986
12142517728551038 ~1988
Exponent Prime Factor Digits Year
12142661728559678 ~1988
12142673728560398 ~1988
12143297728597838 ~1988
12143303242866078 ~1986
12143639242872798 ~1986
12143693728621598 ~1988
12143699242873998 ~1986
12143711242874238 ~1986
12143849971507938 ~1988
12144101728646078 ~1988
12144131242882638 ~1986
12144263242885278 ~1986
12144371242887438 ~1986
121444912186008399 ~1989
121447871214478719 ~1988
12145019242900398 ~1986
12145103242902078 ~1986
12145571242911438 ~1986
12146399242927998 ~1986
12146573728794398 ~1988
121468814858752419 ~1990
12147101971768098 ~1988
12147341971787298 ~1988
121479074130288399 ~1989
12147959242959198 ~1986
Exponent Prime Factor Digits Year
12148079242961598 ~1986
12148271242965438 ~1986
12148511242970238 ~1986
12148561728913678 ~1988
12148601728916078 ~1988
12148777728926638 ~1988
121488113158690879 ~1989
121492991214929919 ~1988
12149363242987278 ~1986
121496632915919139 ~1989
12149699242993998 ~1986
12149741971979298 ~1988
12149771242995438 ~1986
12150431243008638 ~1986
12150683243013678 ~1986
12150757729045438 ~1988
12150953729057198 ~1988
12151031243020638 ~1986
12151343243026878 ~1986
121514831215148319 ~1988
12151679243033598 ~1986
12152099243041998 ~1986
12152639243052798 ~1986
12153041729182478 ~1988
12153061729183678 ~1988
Exponent Prime Factor Digits Year
12153143243062878 ~1986
12153299243065998 ~1986
12153497729209838 ~1988
12153803243076078 ~1986
12153893729233598 ~1988
12153899243077998 ~1986
12153923243078478 ~1986
121542671215426719 ~1988
12154477729268638 ~1988
12154957729297438 ~1988
12155021729301278 ~1988
12155579972446338 ~1988
12156101729366078 ~1988
12156251243125038 ~1986
12156299243125998 ~1986
12156383243127678 ~1986
12157199243143998 ~1986
121573031215730319 ~1988
12157763243155278 ~1986
121578611945257779 ~1989
121589892674977599 ~1989
121593311945492979 ~1989
12159359243187198 ~1986
12159647972771778 ~1988
12159827972786178 ~1988
1181
GIMPS The Prime Pages FactorDb.com
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26-03-08