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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
21291971425839438 ~1988
21292343425846878 ~1988
21292391425847838 ~1988
212926811277560879 ~1989
21293399425867998 ~1988
21293939425878798 ~1988
21294491425889838 ~1988
212953032129530319 ~1990
212953492981348879 ~1990
212953611277721679 ~1989
212958011277748079 ~1989
21296111425922238 ~1988
212963331277779999 ~1989
21296651425933038 ~1988
21296939425938798 ~1988
21297131425942638 ~1988
21297203425944078 ~1988
21297539425950798 ~1988
21297779425955598 ~1988
212982172981750399 ~1990
21298559425971198 ~1988
21299051425981038 ~1988
21299303425986078 ~1988
212994171277965039 ~1989
21299639425992798 ~1988
Exponent Prime Factor Digits Year
21299783425995678 ~1988
21299809302457287910 ~1993
21300203426004078 ~1988
213004813408076979 ~1990
21300551426011038 ~1988
213007911704063299 ~1990
21300959426019198 ~1988
21301523426030478 ~1988
21301823426036478 ~1988
21302063426041278 ~1988
21302111426042238 ~1988
21302219426044398 ~1988
21302483426049678 ~1988
21303059426061198 ~1988
21303143426062878 ~1988
21303311426066238 ~1988
21303599426071998 ~1988
21303671426073438 ~1988
213037811278226879 ~1989
21304499426089998 ~1988
21304931426098638 ~1988
21305699426113998 ~1988
21305891426117838 ~1988
21305939426118798 ~1988
21306179426123598 ~1988
Exponent Prime Factor Digits Year
21306539426130798 ~1988
21307991426159838 ~1988
21308711426174238 ~1988
21308723426174478 ~1988
213087531278525199 ~1989
213088011278528079 ~1989
213089811704718499 ~1990
21308999426179998 ~1988
21310043426200878 ~1988
21310643426212878 ~1988
213109011278654079 ~1989
213111611278669679 ~1989
21311219426224398 ~1988
213113991704911939 ~1990
213116211278697279 ~1989
213119571704956579 ~1990
21312059426241198 ~1988
213122572983715999 ~1990
21312299426245998 ~1988
21312911426258238 ~1988
213130911705047299 ~1990
21313343426266878 ~1988
21313931426278638 ~1988
21314291426285838 ~1988
21314411426288238 ~1988
Exponent Prime Factor Digits Year
213146036820672979 ~1991
21314729255776748110 ~1993
213147711705181699 ~1990
213151873410429939 ~1990
21315251426305038 ~1988
21315803426316078 ~1988
21316859426337198 ~1988
21317423170539384110 ~1992
21317759426355198 ~1988
213177598953458799
21318191426363838 ~1988
213182571279095439 ~1989
21318443426368878 ~1988
213190872131908719 ~1990
213202392132023919 ~1990
213205136396153919 ~1991
21320531426410638 ~1988
213208333411333299 ~1990
213208671705669379 ~1990
213214311705714499 ~1990
21321623426432478 ~1988
21321959426439198 ~1988
21322019426440398 ~1988
21322319426446398 ~1988
21322331426446638 ~1988
1457
GIMPS The Prime Pages FactorDb.com
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25-04-13