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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
212827272128272719 ~1990
21282743425654878 ~1988
212828536384855919 ~1991
21283039238370036910 ~1992
21283511425670238 ~1988
21283523425670478 ~1988
21283859425677198 ~1988
21283919425678398 ~1988
21284339425686798 ~1988
212845331277071999 ~1989
21284723425694478 ~1988
212849873831297679 ~1991
212851796811257299 ~1991
21285311425706238 ~1988
212866736386001919 ~1991
21286691425733838 ~1988
21286823425736478 ~1988
21286943425738878 ~1988
212870335108887939 ~1991
212870896386126719 ~1991
21287243425744878 ~1988
21287411425748238 ~1988
21287879425757598 ~1988
21288083425761678 ~1988
212884731277308399 ~1989
Exponent Prime Factor Digits Year
21288551425771038 ~1988
21289259425785198 ~1988
21289643425792878 ~1988
21289679425793598 ~1988
21290303425806078 ~1988
21290999425819998 ~1988
21291383425827678 ~1988
21291503425830078 ~1988
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
Exponent Prime Factor Digits Year
21297539425950798 ~1988
21297779425955598 ~1988
212982172981750399 ~1990
21298559425971198 ~1988
21299051425981038 ~1988
21299303425986078 ~1988
212994171277965039 ~1989
21299639425992798 ~1988
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
Exponent Prime Factor Digits Year
21303671426073438 ~1988
213037811278226879 ~1989
21304499426089998 ~1988
21304931426098638 ~1988
21305699426113998 ~1988
21305891426117838 ~1988
21305939426118798 ~1988
21306179426123598 ~1988
21306539426130798 ~1988
213079732983116239 ~1990
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
213117013409872179 ~1990
1480
GIMPS The Prime Pages FactorDb.com
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25-07-08