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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
260989371565936239 ~1990
26099413182695891110 ~1993
260995872609958719 ~1991
26099999521999998 ~1989
26100071522001438 ~1989
261002931566017599 ~1990
26100983522019678 ~1989
261010371566062239 ~1990
26101499522029998 ~1989
261016971566101839 ~1990
26101931522038638 ~1989
26101979522039598 ~1989
26103431522068638 ~1989
26104079522081598 ~1989
26104283522085678 ~1989
26105291522105838 ~1989
26105399522107998 ~1989
26105543522110878 ~1989
26105879522117598 ~1989
26105903522118078 ~1989
261059832610598319 ~1991
26106011522120238 ~1989
26106803522136078 ~1989
26107079522141598 ~1989
261071272088570179 ~1990
Exponent Prime Factor Digits Year
26107271522145438 ~1989
26107331522146638 ~1989
26107619522152398 ~1989
26108531522170638 ~1989
261085811566514879 ~1990
26109131522182638 ~1989
26109491522189838 ~1989
26109659522193198 ~1989
26110319522206398 ~1989
26110499522209998 ~1989
26110523522210478 ~1989
26110811522216238 ~1989
26110919522218398 ~1989
26111171522223438 ~1989
26111231522224638 ~1989
26111639522232798 ~1989
26111699522233998 ~1989
26112011522240238 ~1989
26112419522248398 ~1989
261126432611264319 ~1991
26112743522254878 ~1989
261128112611281119 ~1991
26113463522269278 ~1989
26114219522284398 ~1989
26114411522288238 ~1989
Exponent Prime Factor Digits Year
26114999522299998 ~1989
26115191522303838 ~1989
26116703522334078 ~1989
261168371567010239 ~1990
26116897125361105710 ~1992
26117579522351598 ~1989
26117879522357598 ~1989
26117999522359998 ~1989
261180472089443779 ~1990
26118143522362878 ~1989
261181611567089679 ~1990
26118203522364078 ~1989
261184672089477379 ~1990
26118623522372478 ~1989
261186434178982899 ~1991
26118671522373438 ~1989
261186712089493699
261189411567136479 ~1990
26118959522379198 ~1989
26118971522379438 ~1989
261205272612052719 ~1991
261205274701694879
26120603522412078 ~1989
261209512089676099 ~1990
26121383522427678 ~1989
Exponent Prime Factor Digits Year
26121671522433438 ~1989
26121839522436798 ~1989
26121923522438478 ~1989
261225411567352479 ~1990
26122571522451438 ~1989
26122763522455278 ~1989
26123351522467038 ~1989
261235331567411999 ~1990
261235972089887779 ~1990
26123819522476398 ~1989
26124419522488398 ~1989
261248872089990979 ~1990
26125031522500638 ~1989
261250312090002499
26125223522504478 ~1989
261254572090036579 ~1990
26125559522511198 ~1989
26125871522517438 ~1989
26126099522521998 ~1989
26126123522522478 ~1989
26126279522525598 ~1989
26126351522527038 ~1989
26126531522530638 ~1989
261268792090150339 ~1990
261268872612688719 ~1991
1667
GIMPS The Prime Pages FactorDb.com
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25-11-02