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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
25646843512936878 ~1989
25647659512953198 ~1989
256482011538892079 ~1990
25649159512983198 ~1989
256496936155926339 ~1991
25650539513010798 ~1989
256506411539038479 ~1990
256507011539042079 ~1990
25651211513024238 ~1989
25651259513025198 ~1989
25651343513026878 ~1989
25651943513038878 ~1989
25651991513039838 ~1989
25652111513042238 ~1989
256521112052168899
25652339513046798 ~1989
25652663513053278 ~1989
256528211539169279 ~1990
25653359513067198 ~1989
25654619513092398 ~1989
25654679513093598 ~1989
25654823513096478 ~1989
256549331539295999 ~1990
25654943513098878 ~1989
256552514104840179 ~1991
Exponent Prime Factor Digits Year
25655699513113998 ~1989
25655783513115678 ~1989
25655939513118798 ~1989
25655951513119038 ~1989
25656083513121678 ~1989
25656131513122638 ~1989
256563312565633119 ~1991
25656443513128878 ~1989
25656671513133438 ~1989
25656899513137998 ~1989
25657031513140638 ~1989
256570611539423679 ~1990
25657211513144238 ~1989
25657319513146398 ~1989
25658137348950663310 ~1993
256581531539489199 ~1990
25658183513163678 ~1989
256583272052666179 ~1990
25658459513169198 ~1989
25659083513181678 ~1989
25659251513185038 ~1989
25659503513190078 ~1989
25659839513196798 ~1989
25660091513201838 ~1989
25660319513206398 ~1989
Exponent Prime Factor Digits Year
256605412052843299 ~1990
256610992052887939 ~1990
25661243513224878 ~1989
25661651513233038 ~1989
25661771513235438 ~1989
256618491868182607311 ~1995
25662431513248638 ~1989
25664017384960255110 ~1993
25664123513282478 ~1989
25664531513290638 ~1989
25665071513301438 ~1989
25665131513302638 ~1989
256662171539973039 ~1990
25666331513326638 ~1989
25666391513327838 ~1989
25666703513334078 ~1989
25666859513337198 ~1989
25667051513341038 ~1989
25667111513342238 ~1989
256677714620198799 ~1991
25668323513366478 ~1989
25668371513367438 ~1989
25668803513376078 ~1989
25669211513384238 ~1989
25669499513389998 ~1989
Exponent Prime Factor Digits Year
25669739513394798 ~1989
25670531513410638 ~1989
25670819513416398 ~1989
25671263513425278 ~1989
25671311513426238 ~1989
25671491513429838 ~1989
256720992567209919 ~1991
25672379513447598 ~1989
256724472567244719 ~1991
25672571513451438 ~1989
25672919513458398 ~1989
25673603513472078 ~1989
256736992053895939 ~1990
256741798215737299 ~1992
25675211513504238 ~1989
25675451513509038 ~1989
25675619513512398 ~1989
25676159513523198 ~1989
25676243513524878 ~1989
25676351513527038 ~1989
25677023513540478 ~1989
25677059513541198 ~1989
25677719513554398 ~1989
25678343513566878 ~1989
256786571540719439 ~1990
1594
GIMPS The Prime Pages FactorDb.com
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25-04-13