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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.
Exp. Prime Factor Digits Year
1245763523220478 ~1982
1245817199330738 ~1981
1245833398666578 ~1982
1245971224274798 ~1981
1246241398797138 ~1982
1246243498497218 ~1982
1246339598242738 ~1982
124637999710337 ~1980
1246379623189518
124653774792237 ~1980
124658999727137 ~1980
1246697174537598 ~1981
1246711199473778 ~1981
12467811072231679 ~1983
1246823299237538 ~1981
1246997299279298 ~1981
1247053498821218 ~1982
12472093791515379 ~1984
124723124944637 ~1979
1247291324295678 ~1981
124730324946077 ~1979
124742999794337 ~1980
12474531072809599 ~1983
1247557573876238 ~1982
124762199809697 ~1980
Exp. Prime Factor Digits Year
1247621474095998
124764174858477 ~1980
1247833299479938 ~1981
124801199840897 ~1980
1248019424326478 ~1982
1248031199684978 ~1981
124833774900237 ~1980
1248427499370818 ~1982
124850324970077 ~1979
1248553374565918 ~1981
124859374915597 ~1980
1248673199787698 ~1981
1248757299701698 ~1981
124880999904737 ~1980
12488573172096799 ~1984
124891799913377 ~1980
1249013399684178 ~1982
124904324980877 ~1979
124904999923937 ~1980
1249057499622818 ~1982
124909124981837 ~1979
124921774953037 ~1980
12492478919623599 ~1985
124927374956397 ~1980
124931999945537 ~1980
Exp. Prime Factor Digits Year
12493191499182819
1249321274850638 ~1981
124951124990237 ~1979
1249531124953118 ~1980
124963199970497 ~1980
124969124993837 ~1979
124973999979137 ~1980
124979924995997 ~1979
124979999983937
124981774989037 ~1980
124984799987777 ~1980
12498471224850079
125002175001277 ~1980
1250023125002318 ~1980
1250351100028098 ~1980
1250831100066498 ~1980
1250867100069378 ~1980
1251109500443618 ~1982
125117925023597 ~1979
1251179400377298
1251259425428078 ~1982
1251323325343998 ~1981
125158175094877 ~1980
125185125037037 ~1979
1251871525785838 ~1982
Exp. Prime Factor Digits Year
125195375117197 ~1980
1252037175285198 ~1981
1252079225374238 ~1981
1252201200352178 ~1981
1252247601078578 ~1982
12522471227202079
125225925045197 ~1979
1252267200362738 ~1981
125234325046877 ~1979
1252343325609198
125240325048077 ~1979
1252411125241118 ~1980
1252421375726318 ~1981
1252451100196098 ~1980
1252457100196578 ~1980
1252469475938238 ~1982
1252609375782718 ~1981
125263125052637 ~1979
1252631325684078
1252819225507438 ~1981
1252843125284318 ~1980
125291375174797 ~1980
1252913400932178
125299125059837 ~1979
1252991526256238
283
GIMPS The Prime Pages FactorDb.com
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25-06-01