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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
19710611394212238 ~1988
19710863394217278 ~1988
19710959394219198 ~1988
197113971182683839 ~1989
19711403394228078 ~1988
19712351394247038 ~1988
19712383224721166310 ~1992
197127835125323599 ~1991
19712879394257598 ~1988
19712939394258798 ~1988
19713143394262878 ~1988
197131731182790399 ~1989
19713719394274398 ~1988
197137191577097539
19713899394277998 ~1988
19714043394280878 ~1988
19714199394283998 ~1988
19714283394285678 ~1988
19714763394295278 ~1988
19714811394296238 ~1988
19715159394303198 ~1988
197154011182924079 ~1989
19715651394313038 ~1988
19715963394319278 ~1988
197160171182961039 ~1989
Exponent Prime Factor Digits Year
197169891577359139 ~1989
197170673549072079 ~1990
19717163394343278 ~1988
19717343394346878 ~1988
19717403394348078 ~1988
197175411577403299 ~1989
19717583394351678 ~1988
19717931394358638 ~1988
19717979394359598 ~1988
197180471971804719 ~1990
19718459394369198 ~1988
197186094732466179 ~1991
19718879394377598 ~1988
197190611183143679 ~1989
19719191394383838 ~1988
19719839394396798 ~1988
197199411183196479 ~1989
19720163394403278 ~1988
19720523394410478 ~1988
19721231394424638 ~1988
19721291394425838 ~1988
19721543394430878 ~1988
19721771394435438 ~1988
197218811183312879 ~1989
19721939394438798 ~1988
Exponent Prime Factor Digits Year
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
19728239394564798 ~1988
19728389122316011910 ~1992
19728563394571278 ~1988
197288471972884719 ~1990
19729679394593598 ~1988
197298235129753999 ~1991
197299731183798399 ~1989
Exponent Prime Factor Digits Year
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
19734251394685038 ~1988
19734791394695838 ~1988
197366691578933539 ~1989
19736939394738798 ~1988
19736999394739998 ~1988
19737383394747678 ~1988
197377791579022339 ~1989
19737911394758238 ~1988
197379371184276239 ~1989
19739003394780078 ~1988
19739411394788238 ~1988
1409
GIMPS The Prime Pages FactorDb.com
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25-05-04