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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
19720523394410478 ~1988
19721231394424638 ~1988
19721291394425838 ~1988
19721543394430878 ~1988
19721771394435438 ~1988
197218811183312879 ~1989
19721939394438798 ~1988
19722071394441438 ~1988
19722119394442398 ~1988
19723031394460638 ~1988
197238611183431679 ~1989
197242073550357279 ~1990
19724651394493038 ~1988
197247671972476719 ~1990
197250291578002339 ~1989
19725071394501438 ~1988
19725479394509598 ~1988
19725599394511998 ~1988
19725851394517038 ~1988
19726079394521598 ~1988
19726643394532878 ~1988
19726823394536478 ~1988
197268913156302579 ~1990
19727171394543438 ~1988
197276571183659439 ~1989
Exponent Prime Factor Digits Year
19728239394564798 ~1988
19728389122316011910 ~1992
19728563394571278 ~1988
197286291578290339 ~1989
197288471972884719 ~1990
19729679394593598 ~1988
197298235129753999 ~1991
197299731183798399 ~1989
19730003394600078 ~1988
19730099394601998 ~1988
19730351394607038 ~1988
197305675129947439 ~1991
197308131183848799 ~1989
19731191394623838 ~1988
19731599394631998 ~1988
197316536314128979 ~1991
19731791394635838 ~1988
19731983394639678 ~1988
197322011183932079 ~1989
197326513551877199 ~1990
19732871394657438 ~1988
19733663394673278 ~1988
197339113157425779 ~1990
19734251394685038 ~1988
19734791394695838 ~1988
Exponent Prime Factor Digits Year
197366691578933539 ~1989
19736939394738798 ~1988
19736999394739998 ~1988
19737383394747678 ~1988
197377791579022339 ~1989
19737911394758238 ~1988
197379371184276239 ~1989
197389331184335999 ~1989
19739003394780078 ~1988
19739411394788238 ~1988
197396095921882719 ~1991
197401379475265779 ~1991
19740191394803838 ~1988
19740239394804798 ~1988
19740419394808398 ~1988
197405771184434639 ~1989
197407131184442799 ~1989
19740863394817278 ~1988
19741511394830238 ~1988
19741523394830478 ~1988
197416611184499679 ~1989
19741691394833838 ~1988
19742003394840078 ~1988
197421711579373699 ~1989
197424532763943439 ~1990
Exponent Prime Factor Digits Year
19742543394850878 ~1988
19742699394853998 ~1988
19742903394858078 ~1988
19743539394870798 ~1988
197435998292311599 ~1991
19743623394872478 ~1988
19744019394880398 ~1988
19744031394880638 ~1988
197446931184681599 ~1989
197448011184688079 ~1989
19744943394898878 ~1988
197456511579652099 ~1989
19745711394914238 ~1988
197460191974601919 ~1990
19746203394924078 ~1988
19746539394930798 ~1988
19746731394934638 ~1988
19746803394936078 ~1988
197469131184814799 ~1989
19747391394947838 ~1988
19747571394951438 ~1988
197480771184884639 ~1989
19748243394964878 ~1988
19748411394968238 ~1988
19748759394975198 ~1988
1454
GIMPS The Prime Pages FactorDb.com
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25-10-20