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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
279315974469055539 ~1991
27932279558645598 ~1989
279326571675959439 ~1990
27932977128491694310 ~1992
279335092234680739 ~1991
27933803558676078 ~1989
27933863558677278 ~1989
27933959558679198 ~1989
27936791558735838 ~1989
27936851558737038 ~1989
27937271558745438 ~1989
279372971676237839 ~1990
27937979558759598 ~1989
27938159558763198 ~1989
27938243558764878 ~1989
27938591558771838 ~1989
27938639558772798 ~1989
279387611676325679 ~1990
27938783558775678 ~1989
27938831558776638 ~1989
27939239558784798 ~1989
279394733911526239 ~1991
279405731676434399 ~1990
27940691558813838 ~1989
27940931558818638 ~1989
Exponent Prime Factor Digits Year
27941491134119156910 ~1993
27941519558830398 ~1989
279417315029511599 ~1991
27941783558835678 ~1989
27942371558847438 ~1989
27942419558848398 ~1989
279429893912018479 ~1991
27943199558863998 ~1989
27943691558873838 ~1989
27944087402394852910 ~1994
27944219558884398 ~1989
27944291558885838 ~1989
27944519558890398 ~1989
27945383558907678 ~1989
279457612235660899 ~1991
27946703558934078 ~1989
27946799558935998 ~1989
27946823558936478 ~1989
27947063558941278 ~1989
279476414471622579 ~1991
279478971676873839 ~1990
27947999558959998 ~1989
27948023558960478 ~1989
279482531676895199 ~1990
27948311558966238 ~1989
Exponent Prime Factor Digits Year
27948551558971038 ~1989
27949403558988078 ~1989
279494232794942319 ~1991
27949423117387576710
27949451558989038 ~1989
279504915031088399 ~1991
27950963559019278 ~1989
27951263559025278 ~1989
27951551559031038 ~1989
27951659559033198 ~1989
27952499559049998 ~1989
27952643559052878 ~1989
27953171559063438 ~1989
27953591559071838 ~1989
27953699559073998 ~1989
27955139559102798 ~1989
27955379559107598 ~1989
279557715032038799 ~1991
27956303559126078 ~1989
279565632795656319 ~1991
27956651559133038 ~1989
27957119559142398 ~1989
27957323559146478 ~1989
279577011677462079 ~1990
27957731559154638 ~1989
Exponent Prime Factor Digits Year
279587693914227679 ~1991
27958919559178398 ~1989
27959111559182238 ~1989
27959819559196398 ~1989
27959843559196878 ~1989
27961259559225198 ~1989
279615531677693199 ~1990
27962183559243678 ~1989
27962939559258798 ~1989
27963203559264078 ~1989
27963311559266238 ~1989
27963443559268878 ~1989
27963671559273438 ~1989
27963863559277278 ~1989
27963959559279198 ~1989
27964103559282078 ~1989
27964451559289038 ~1989
27964571559291438 ~1989
27964691559293838 ~1989
27965111559302238 ~1989
279651592237212739 ~1991
27965471559309438 ~1989
27965783559315678 ~1989
27966131559322638 ~1989
27966143559322878 ~1989
1668
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25-05-04