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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
247882971487297839 ~1990
24789059495781198 ~1989
24789311495786238 ~1989
247896131487376799 ~1990
24790043495800878 ~1989
24790211495804238 ~1989
247903973470655599 ~1991
24791243495824878 ~1989
24791303495826078 ~1989
24791453252872820710 ~1993
24791699495833998 ~1989
247918436445879199 ~1991
24792503495850078 ~1989
24792623495852478 ~1989
247926971487561839 ~1990
247927211487563279 ~1990
24792731495854638 ~1989
24793019495860398 ~1989
24793343495866878 ~1989
24793523495870478 ~1989
24793859495877198 ~1989
24794111495882238 ~1989
247942331487653999 ~1990
24795059495901198 ~1989
24795671495913438 ~1989
Exponent Prime Factor Digits Year
24795839495916798 ~1989
24796199495923998 ~1989
24796571495931438 ~1989
247968611487811679 ~1990
24798131495962638 ~1989
24798443495968878 ~1989
247987971983903779 ~1990
24799223495984478 ~1989
24799259495985198 ~1989
24799751495995038 ~1989
24799811495996238 ~1989
24800183496003678 ~1989
248004293472060079 ~1991
24800459496009198 ~1989
24800579496011598 ~1989
24800663496013278 ~1989
24801443496028878 ~1989
24801743496034878 ~1989
248021531488129199 ~1990
24802259496045198 ~1989
24802559496051198 ~1989
24803123496062478 ~1989
248035872480358719 ~1990
24803651496073038 ~1989
24803699496073998 ~1989
Exponent Prime Factor Digits Year
24803951496079038 ~1989
24804863496097278 ~1989
24806651496133038 ~1989
248068495953643779 ~1991
24807239496144798 ~1989
24807791496155838 ~1989
24808139496162798 ~1989
24808523496170478 ~1989
24808739496174798 ~1989
248093595954246179 ~1991
248095371984762979 ~1990
24809699496193998 ~1989
24810671496213438 ~1989
248106731488640399 ~1990
24811379496227598 ~1989
24811931496238638 ~1989
24811991496239838 ~1989
24812303496246078 ~1989
248123232481232319 ~1990
24812351496247038 ~1989
248123931488743599 ~1990
24812531496250638 ~1989
24812759496255198 ~1989
248129991985039939 ~1990
24813263496265278 ~1989
Exponent Prime Factor Digits Year
24813443496268878 ~1989
248141571985132579 ~1990
248152071985216579 ~1990
24815831496316638 ~1989
24816791496335838 ~1989
248168295459702399 ~1991
24817319496346398 ~1989
24817511496350238 ~1989
248178475956283299 ~1991
24818663496373278 ~1989
24818723496374478 ~1989
24819059496381198 ~1989
248190714467432799 ~1991
24819611496392238 ~1989
24820199496403998 ~1989
24820571496411438 ~1989
24821063496421278 ~1989
24821939496438798 ~1989
24822191496443838 ~1989
24822383496447678 ~1989
24822443496448878 ~1989
24822923496458478 ~1989
248229912482299119 ~1990
24823223496464478 ~1989
24823751496475038 ~1989
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24-10-27