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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
210620811684966499 ~1990
21062543421250878 ~1988
21062999421259998 ~1988
21063071421261438 ~1988
21063131421262638 ~1988
21063803421276078 ~1988
21064073505537752110 ~1993
210643131263858799 ~1989
21064523421290478 ~1988
210651531263909199 ~1989
21065351421307038 ~1988
210654891685239139 ~1990
21066359421327198 ~1988
21066443421328878 ~1988
210665811685326499 ~1990
210666975056007299 ~1991
21066719421334398 ~1988
210669313370708979 ~1990
21066959421339198 ~1988
21067043421340878 ~1988
210673496320204719 ~1991
21067391421347838 ~1988
21067619421352398 ~1988
210676392106763919 ~1990
21067883421357678 ~1988
Exponent Prime Factor Digits Year
21068039421360798 ~1988
21068951421379038 ~1988
21069131421382638 ~1988
21070739421414798 ~1988
21070823421416478 ~1988
21070859421417198 ~1988
210713211685705699 ~1990
210717171685737379 ~1990
210718011685744099 ~1990
21072251421445038 ~1988
21072431421448638 ~1988
21072659421453198 ~1988
21072671421453438 ~1988
21072731421454638 ~1988
21073103421462078 ~1988
210731271685850179 ~1990
210733632107336319 ~1990
21073379421467598 ~1988
21074051421481038 ~1988
210740692950369679 ~1990
210741971264451839 ~1989
21074519421490398 ~1988
210748038429921219 ~1991
21075023421500478 ~1988
210750771264504639 ~1989
Exponent Prime Factor Digits Year
21075451223399780710 ~1992
210756611264539679 ~1989
21075839421516798 ~1988
210759171686073379 ~1990
21076019421520398 ~1988
21076043421520878 ~1988
210762411264574479 ~1989
210762611264575679 ~1989
21076343421526878 ~1988
21076463421529278 ~1988
21076619421532398 ~1988
21076631421532638 ~1988
21076691421533838 ~1988
21076739421534798 ~1988
21076799421535998 ~1988
21076943421538878 ~1988
210770539695444399 ~1992
21077183421543678 ~1988
21078443421568878 ~1988
210787272107872719 ~1990
21078781354123520910 ~1993
21079181151770103310 ~1992
21079631421592638 ~1988
21079703421594078 ~1988
21079979421599598 ~1988
Exponent Prime Factor Digits Year
210803173372850739 ~1990
210806112108061119 ~1990
21080711421614238 ~1988
21080963421619278 ~1988
210813231011903504111 ~1994
21082151421643038 ~1988
210822771264936639 ~1989
210825971264955839 ~1989
210828011264968079 ~1989
21083039421660798 ~1988
21083831421676638 ~1988
21084083421681678 ~1988
21084611421692238 ~1988
21084923421698478 ~1988
21084971421699438 ~1988
21085249366883332710 ~1993
21085271421705438 ~1988
21085643421712878 ~1988
210859191686873539 ~1990
21085979421719598 ~1988
21086003421720078 ~1988
210864913373838579 ~1990
21087431421748638 ~1988
21087623421752478 ~1988
210884211265305279 ~1989
1530
GIMPS The Prime Pages FactorDb.com
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26-02-08