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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
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
212071331272427999 ~1989
Exponent Prime Factor Digits Year
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
21217379424347598 ~1988
Exponent Prime Factor Digits Year
212177091697416739 ~1990
21217739424354798 ~1988
212178291697426339 ~1990
212193013395088179 ~1990
21219563424391278 ~1988
212196411273178479 ~1989
212198113819565999 ~1991
21219839424396798 ~1988
21220019424400398 ~1988
21220211424404238 ~1988
212203131273218799 ~1989
21220379424407598 ~1988
21220583424411678 ~1988
212210211273261279 ~1989
21221303424426078 ~1988
21221339424426798 ~1988
21222143424442878 ~1988
21222251424445038 ~1988
21222611424452238 ~1988
21223283424465678 ~1988
21223379424467598 ~1988
21223511424470238 ~1988
21223619424472398 ~1988
212236372971309199 ~1990
21223739424474798 ~1988
Exponent Prime Factor Digits Year
212246472122464719 ~1990
21224771424495438 ~1988
21224783424495678 ~1988
21225563424511278 ~1988
21225719424514398 ~1988
21225959424519198 ~1988
212261411273568479 ~1989
212262918915042239 ~1991
21226379424527598 ~1988
21227711424554238 ~1988
212286531273719199 ~1989
21228659424573198 ~1988
212290011273740079 ~1989
21229031424580638 ~1988
21229163424583278 ~1988
21229199424583998 ~1988
212292496368774719 ~1991
21229751424595038 ~1988
21229919424598398 ~1988
21229979424599598 ~1988
212305372972275199 ~1990
21230879424617598 ~1988
21230903424618078 ~1988
21230927101908449710 ~1992
212316113821689999 ~1991
1454
GIMPS The Prime Pages FactorDb.com
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25-04-13