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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
211843491694747939 ~1990
21184571423691438 ~1988
21185303423706078 ~1988
21185603423712078 ~1988
21185891423717838 ~1988
21186239423724798 ~1988
21186383423727678 ~1988
21186563423731278 ~1988
21186983423739678 ~1988
21187319423746398 ~1988
21187511423750238 ~1988
21187619423752398 ~1988
211877816356334319 ~1991
21187823423756478 ~1988
21187871423757438 ~1988
21188003423760078 ~1988
211882131271292799 ~1989
211890171271341039 ~1989
211894731271368399 ~1989
21190259423805198 ~1988
21190919423818398 ~1988
21191123423822478 ~1988
21191459423829198 ~1988
21191543423830878 ~1988
21191591423831838 ~1988
Exponent Prime Factor Digits Year
21191603423832078 ~1988
211918132966853839 ~1990
211921131271526799 ~1989
211922873814611679 ~1991
21192371423847438 ~1988
21192443423848878 ~1988
211927131271562799 ~1989
211932235510237999 ~1991
21193391423867838 ~1988
21193583423871678 ~1988
21193691423873838 ~1988
21194531423890638 ~1988
211946531271679199 ~1989
21195059423901198 ~1988
21195299423905998 ~1988
21196159292506994310 ~1993
21196211423924238 ~1988
21196223423924478 ~1988
21196277118699151310 ~1992
21196403423928078 ~1988
211965411695723299 ~1990
21196691423933838 ~1988
211971171271827039 ~1989
211987571271925439 ~1989
21199751423995038 ~1988
Exponent Prime Factor Digits Year
21200303424006078 ~1988
21200579424011598 ~1988
21201419424028398 ~1988
21201611424032238 ~1988
212019192120191919 ~1990
212025411272152479 ~1989
212025411696203299
21202763424055278 ~1988
212028432120284319 ~1990
21203459424069198 ~1988
212035131272210799 ~1989
21203771424075438 ~1988
212038992120389919 ~1990
21204251424085038 ~1988
212043971272263839 ~1989
212050211272301279 ~1989
21205139424102798 ~1988
212058711696469699 ~1990
21205991424119838 ~1988
212059931272359599 ~1989
21206183424123678 ~1988
21206303424126078 ~1988
212064411272386479 ~1989
212064912120649119 ~1990
21206579424131598 ~1988
Exponent Prime Factor Digits Year
212071331272427999 ~1989
21209003424180078 ~1988
212093112120931119 ~1990
21209459424189198 ~1988
21209603424192078 ~1988
212096096362882719 ~1991
21211259424225198 ~1988
212122393818203039 ~1991
212124913393998579 ~1990
212125011272750079 ~1989
21212519424250398 ~1988
212125931272755599 ~1989
212133471697067779 ~1990
21213431424268638 ~1988
21214643424292878 ~1988
212149131272894799 ~1989
21215231424304638 ~1988
21215459424309198 ~1988
21215543424310878 ~1988
21215599186697271310 ~1992
21215783424315678 ~1988
21216203424324078 ~1988
21216551424331038 ~1988
21216619101839771310 ~1992
21216983424339678 ~1988
1469
GIMPS The Prime Pages FactorDb.com
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25-06-08