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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
4028287725091678 ~1985
4028389886245598 ~1985
4028429563980078 ~1985
402847180569437 ~1983
402896380579277 ~1983
4029001141820835310 ~1988
4029031725225598 ~1985
4029049966971778 ~1985
4029253886435678 ~1985
4029517241771038 ~1984
4029587322366978 ~1984
4030133241807998 ~1984
4030363403036318 ~1984
4030387403038718 ~1984
4030393241823598 ~1984
4030421241825278 ~1984
4030421322433698
403057180611437 ~1983
4030577564280798 ~1985
4030613131397983910 ~1988
40306331209189919 ~1985
4030657644905138 ~1985
4030783403078318 ~1984
4030847725552478 ~1985
403091980618397 ~1983
Exp. Prime Factor Digits Year
40309191289894099
40309812821686719 ~1986
40309931854256799 ~1986
4031129322490338 ~1984
40312193950594639 ~1987
403123180624637 ~1983
403139980627997 ~1983
4031453241887198 ~1984
4031719403171918 ~1984
40318272090099116911 ~1991
4031837322546978 ~1984
4031893241913598 ~1984
4031897241913838 ~1984
4031977967674498 ~1985
4032101241926078 ~1984
4032151403215118 ~1984
4032307725815278 ~1985
4032437241946238 ~1984
4032533564554638 ~1985
4032727645236338 ~1985
4032811403281118 ~1984
403283980656797 ~1983
403286380657277 ~1983
4032967725934078 ~1985
403301980660397 ~1983
Exp. Prime Factor Digits Year
4033079322646338 ~1984
4033087645293938 ~1985
4033229322658338 ~1984
4033343968002338 ~1985
4033409322672738 ~1984
403351180670237 ~1983
40336091613443619 ~1986
403361980672397 ~1983
4033727322698178 ~1984
4033831645412978 ~1985
4033921242035278 ~1984
403397980679597 ~1983
403418380683677 ~1983
4034489322759138 ~1984
4034659403465918 ~1984
4034761242085678 ~1984
4034873242092398 ~1984
4034957322796578 ~1984
4035013242100798 ~1984
4035047322803778 ~1984
40350791694733199 ~1986
40351311049134079 ~1985
4035191726334398 ~1985
403520380704077 ~1983
403529980705997 ~1983
Exp. Prime Factor Digits Year
403543180708637 ~1983
403559980711997 ~1983
4035599322847938
4035677242140638 ~1984
4035677564994798
4036057242163438 ~1984
4036183403618318 ~1984
4036297242177838 ~1984
403645180729037 ~1983
4036517242191038 ~1984
40369091211072719 ~1985
4036927968862498 ~1985
403694380738877 ~1983
4036997242219838 ~1984
4037069322965538 ~1984
4037309189753523110 ~1988
4037447322995778 ~1984
4037521646003378 ~1985
4037729323018338 ~1984
4037771323021698 ~1984
4037821242269278 ~1984
403796380759277 ~1983
4038161323052898 ~1984
4038187646109938 ~1985
40382471373003999 ~1986
620
GIMPS The Prime Pages FactorDb.com
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26-04-05