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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
21547439430948798 ~1988
21547583430951678 ~1988
215477511723820099 ~1990
21547931430958638 ~1988
21548291430965838 ~1988
21548399430967998 ~1988
215485075171641699 ~1991
21548531430970638 ~1988
21548963430979278 ~1988
215492991723943939 ~1990
21549611430992238 ~1988
21549623430992478 ~1988
21549719430994398 ~1988
215498776464963119 ~1991
215499011292994079 ~1989
21550043431000878 ~1988
21550079431001598 ~1988
215504571724036579 ~1990
21550811431016238 ~1988
21551171431023438 ~1988
215513171293079039 ~1989
21551423431028478 ~1988
21551459431029198 ~1988
215515915603413679 ~1991
21551819431036398 ~1988
Exponent Prime Factor Digits Year
21551951431039038 ~1988
215520312155203119 ~1990
21552143431042878 ~1988
215533611724268899 ~1990
21553379431067598 ~1988
21553643431072878 ~1988
21554111431082238 ~1988
215546296466388719 ~1991
21554651431093038 ~1988
21554723431094478 ~1988
215548491724387939 ~1990
21557099431141998 ~1988
21557531431150638 ~1988
215577371293464239 ~1989
21557843431156878 ~1988
21558143431162878 ~1988
215588811724710499 ~1990
21559019431180398 ~1988
215590611293543679 ~1989
215590993880637839 ~1991
21559871431197438 ~1988
21559883431197678 ~1988
21560351431207038 ~1988
21561443431228878 ~1988
21561503431230078 ~1988
Exponent Prime Factor Digits Year
21562031431240638 ~1988
21562259431245198 ~1988
21562439172499512110 ~1992
21562559431251198 ~1988
21563099431261998 ~1988
215632371293794239 ~1989
215632371725058979
215634131293804799 ~1989
215642171293853039 ~1989
21565091431301838 ~1988
21565319431306398 ~1988
215654592156545919 ~1990
21565751431315038 ~1988
21566351431327038 ~1988
215663811725310499 ~1990
21566423431328478 ~1988
215665435607301199 ~1991
215670113882061999 ~1991
215671571294029439 ~1989
21567191431343838 ~1988
21567323431346478 ~1988
21567743431354878 ~1988
21568331431366638 ~1988
215684931294109599 ~1989
21568751431375038 ~1988
Exponent Prime Factor Digits Year
21568763431375278 ~1988
21569771431395438 ~1988
21569903431398078 ~1988
21570383431407678 ~1988
21570431431408638 ~1988
21570623431412478 ~1988
21570863431417278 ~1988
21572231431444638 ~1988
21572279431445598 ~1988
21572891431457838 ~1988
21573203431464078 ~1988
21573791431475838 ~1988
21573971431479438 ~1988
21573983431479678 ~1988
21574211431484238 ~1988
215744171294465039 ~1989
21574499431489998 ~1988
215746131294476799 ~1989
21574859431497198 ~1988
21574991431499838 ~1988
21575591431511838 ~1988
21576251431525038 ~1988
21576539431530798 ~1988
21576851431537038 ~1988
215769531294617199 ~1989
1417
GIMPS The Prime Pages FactorDb.com
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24-10-27