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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
204195711633565699
20420243408404878 ~1988
20420759408415198 ~1988
20420891408417838 ~1988
20420951408419038 ~1988
20421419408428398 ~1988
204217671633741379 ~1990
204226571225359439 ~1989
204227331225363999 ~1989
20422751408455038 ~1988
204228374901480899 ~1991
20422859408457198 ~1988
204235673676242079 ~1990
204235919803323699 ~1991
204238316535625939 ~1991
20423939408478798 ~1988
204241011633928099 ~1990
20424143408482878 ~1988
204241971633935779 ~1990
20424263408485278 ~1988
20425021228760235310 ~1992
20425121159315943910 ~1992
20425271408505438 ~1988
20425319408506398 ~1988
20425571408511438 ~1988
Exponent Prime Factor Digits Year
20425799408515998 ~1988
20426291408525838 ~1988
204262931225577599 ~1989
20426603408532078 ~1988
204268211225609279 ~1989
20427119408542398 ~1988
204272418170896419 ~1991
20427359408547198 ~1988
20427971408559438 ~1988
204281411225688479 ~1989
20428319408566398 ~1988
20428379408567598 ~1988
204286011225716079 ~1989
20429471408589438 ~1988
204296211634369699 ~1990
20430191408603838 ~1988
20430323408606478 ~1988
20430551408611038 ~1988
204307934903390339 ~1991
20431091408621838 ~1988
20431223408624478 ~1988
20431319408626398 ~1988
20431343408626878 ~1988
204320773269132339 ~1990
20432099408641998 ~1988
Exponent Prime Factor Digits Year
204321734903721539 ~1991
204327672043276719 ~1990
20433239408664798 ~1988
20433323408666478 ~1988
204338112043381119 ~1990
204341571226049439 ~1989
20434643408692878 ~1988
20434703408694078 ~1988
20435099147132712910 ~1992
20435939408718798 ~1988
20436359408727198 ~1988
20436551408731038 ~1988
20436623408732478 ~1988
20436659408733198 ~1988
20436863408737278 ~1988
204370971226225839 ~1989
204377171226263039 ~1989
20437979408759598 ~1988
204387792043877919 ~1990
20439179408783598 ~1988
20439719408794398 ~1988
20439911408798238 ~1988
204405074905721699 ~1991
204409211226455279 ~1989
204414371226486239 ~1989
Exponent Prime Factor Digits Year
20441699408833998 ~1988
204419472044194719 ~1990
20442011408840238 ~1988
20442479233044260710 ~1992
20442599408851998 ~1988
20442659408853198 ~1988
20443019408860398 ~1988
20443691408873838 ~1988
204438531226631199 ~1989
204439011226634079 ~1989
204439371635514979 ~1990
204442134906611139 ~1991
20444471408889438 ~1988
20444771408895438 ~1988
20445443408908878 ~1988
20445791408915838 ~1988
20445923408918478 ~1988
20446271408925438 ~1988
20446799408935998 ~1988
20447159408943198 ~1988
20447411408948238 ~1988
204476571226859439 ~1989
20448119408962398 ~1988
204483411635867299 ~1990
20448443408968878 ~1988
1482
GIMPS The Prime Pages FactorDb.com
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25-11-02