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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
18710759374215198 ~1988
18710959119750137710 ~1991
187111371122668239 ~1989
18711239374224798 ~1988
18711403134722101710 ~1992
187114791496918339 ~1989
187116074490785699 ~1990
18711743374234878 ~1988
187120811122724879 ~1989
18712943374258878 ~1988
18713291374265838 ~1988
18713339374266798 ~1988
18713963374279278 ~1988
18714023374280478 ~1988
18714659374293198 ~1988
18714719374294398 ~1988
18714779374295598 ~1988
187149196363072479 ~1991
18714959374299198 ~1988
187152531122915199 ~1989
187158311871583119 ~1989
18715871374317438 ~1988
18716231374324638 ~1988
18716471374329438 ~1988
18716531374330638 ~1988
Exponent Prime Factor Digits Year
187176611123059679 ~1989
18717971374359438 ~1988
18718019374360398 ~1988
18718103374362078 ~1988
18718319374366398 ~1988
18718379374367598 ~1988
18718943374378878 ~1988
18719219374384398 ~1988
187193571123161439 ~1989
187195094118291980111 ~1995
187195491497563939 ~1989
18720203374404078 ~1988
18720599374411998 ~1988
187208811123252879 ~1989
187210071497680579 ~1989
18721271374425438 ~1988
187219873369957679 ~1990
18721991374439838 ~1988
18722183374443678 ~1988
187226331123357999 ~1989
187227411123364479 ~1989
187227471497819779 ~1989
18723143374462878 ~1988
18723959374479198 ~1988
187240511872405119 ~1989
Exponent Prime Factor Digits Year
187246193370431439 ~1990
18724991374499838 ~1988
18725123374502478 ~1988
18725363374507278 ~1988
18725711374514238 ~1988
187258211123549279 ~1989
18726479374529598 ~1988
18726863374537278 ~1988
18726923374538478 ~1988
18727619374552398 ~1988
187277591872775919 ~1989
187280092621921279 ~1990
18728051374561038 ~1988
18728063374561278 ~1988
18728291374565838 ~1988
187284971123709839 ~1989
18728579374571598 ~1988
18728639374572798 ~1988
18728903374578078 ~1988
18729059374581198 ~1988
187292331123753999 ~1989
18729443374588878 ~1988
18729671374593438 ~1988
187301571498412579 ~1989
187304894120707599 ~1990
Exponent Prime Factor Digits Year
18730619374612398 ~1988
187310211498481699 ~1989
18731171374623438 ~1988
18731183374623678 ~1988
187318571123911439 ~1989
18731903374638078 ~1988
187319172997106739 ~1990
187319871498558979 ~1989
187323411123940479 ~1989
18732491374649838 ~1988
18732599374651998 ~1988
18732839374656798 ~1988
18733103374662078 ~1988
18733139374662798 ~1988
18733499374669998 ~1988
18733619374672398 ~1988
18734879374697598 ~1988
18735239374704798 ~1988
18735911374718238 ~1988
18736331374726638 ~1988
187369991873699919 ~1989
187371771124230639 ~1989
187376591873765919 ~1989
18737843374756878 ~1988
18737879374757598 ~1988
1391
GIMPS The Prime Pages FactorDb.com
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25-07-08