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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
254854874077677939 ~1991
25486511509730238 ~1989
25486823509736478 ~1989
25487123509742478 ~1989
25487603509752078 ~1989
25488299509765998 ~1989
25488371509767438 ~1989
254884971529309839 ~1990
25488863509777278 ~1989
25488923509778478 ~1989
25488971509779438 ~1989
254889893568458479 ~1991
25489391509787838 ~1989
254894232548942319 ~1991
25490291509805838 ~1989
254905574078489139 ~1991
25490639509812798 ~1989
254906872039254979 ~1990
25491239509824798 ~1989
25491311509826238 ~1989
25491611509832238 ~1989
25492451509849038 ~1989
254927771529566639 ~1990
25492991509859838 ~1989
25493651509873038 ~1989
Exponent Prime Factor Digits Year
254937312549373119 ~1991
254940371529642239 ~1990
25494083509881678 ~1989
25494383509887678 ~1989
254943971529663839 ~1990
254944792039558339 ~1990
25495439509908798 ~1989
25496279509925598 ~1989
25496483509929678 ~1989
25497011509940238 ~1989
25497071509941438 ~1989
25497239509944798 ~1989
254972872039782979 ~1990
25497383509947678 ~1989
25497911509958238 ~1989
25499183203993464110 ~1993
254992331529953999 ~1990
25499459509989198 ~1989
25499471509989438 ~1989
25499531509990638 ~1989
25500239510004798 ~1989
255016574080265139 ~1991
25501739510034798 ~1989
25501799510035998 ~1989
25501919510038398 ~1989
Exponent Prime Factor Digits Year
255020331530121999 ~1990
25502111510042238 ~1989
25502783510055678 ~1989
25503011510060238 ~1989
255030592040244739 ~1990
25503311510066238 ~1989
255036712040293699 ~1990
25503683510073678 ~1989
255039672550396719 ~1991
25504379510087598 ~1989
25504943510098878 ~1989
255050232550502319 ~1991
25505059224444519310 ~1993
255051011530306079 ~1990
25505279510105598 ~1989
25506203510124078 ~1989
25507271510145438 ~1989
25507571510151438 ~1989
25508291510165838 ~1989
25508471510169438 ~1989
25509119510182398 ~1989
255110212040881699 ~1990
255114293571600079 ~1991
255116212040929699 ~1990
25511639510232798 ~1989
Exponent Prime Factor Digits Year
25511723510234478 ~1989
25512671510253438 ~1989
25512719510254398 ~1989
25513283510265678 ~1989
25514039510280798 ~1989
255149872041198979 ~1990
25515779510315598 ~1989
25515923510318478 ~1989
25516103510322078 ~1989
255167211531003279 ~1990
255167872041342979 ~1990
25516871510337438 ~1989
25517291510345838 ~1989
25518803510376078 ~1989
255191411531148479 ~1990
25519283510385678 ~1989
25519519183740536910 ~1993
255199811531198879 ~1990
25520063510401278 ~1989
25521371510427438 ~1989
255214072041712579 ~1990
25521563510431278 ~1989
25522463510449278 ~1989
25522691510453838 ~1989
25522883510457678 ~1989
1614
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25-07-08