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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
26241431524828638 ~1989
26241443524828878 ~1989
262417514723515199 ~1991
26242019524840398 ~1989
262421093673895279 ~1991
26243039524860798 ~1989
26243219524864398 ~1989
26244083524881678 ~1989
26244791524895838 ~1989
26245211524904238 ~1989
26245379524907598 ~1989
26245451524909038 ~1989
26246123524922478 ~1989
26247409104989636110 ~1992
262474131574844799 ~1990
26247563524951278 ~1989
262486371574918239 ~1990
26248679524973598 ~1989
26249183524983678 ~1989
26249291524985838 ~1989
26249519524990398 ~1989
26250491525009838 ~1989
26250743525014878 ~1989
262511171575067039 ~1990
26251163525023278 ~1989
Exponent Prime Factor Digits Year
26251223525024478 ~1989
26251343525026878 ~1989
26251523525030478 ~1989
26251619525032398 ~1989
26251811525036238 ~1989
26252183525043678 ~1989
26252339525046798 ~1989
26253191525063838 ~1989
26253203525064078 ~1989
26253299525065998 ~1989
26253371525067438 ~1989
26253443525068878 ~1989
262537131575222799 ~1990
262544331575265999 ~1990
26254463525089278 ~1989
26254691525093838 ~1989
262547411575284479 ~1990
26255111525102238 ~1989
26255291525105838 ~1989
26255783525115678 ~1989
26256371525127438 ~1989
26256539525130798 ~1989
262573392625733919 ~1991
262575472100603779 ~1990
26257739525154798 ~1989
Exponent Prime Factor Digits Year
26258231525164638 ~1989
26258279525165598 ~1989
26258723525174478 ~1989
26259179525183598 ~1989
26259839525196798 ~1989
26259911525198238 ~1989
26260211525204238 ~1989
26260523525210478 ~1989
262609011575654079 ~1990
262609672100877379 ~1990
26261783525235678 ~1989
26262539525250798 ~1989
262626592101012739 ~1990
26262779525255598 ~1989
262629792626297919 ~1991
26263571525271438 ~1989
262640093676961279 ~1991
262640876303380899 ~1992
262643336303439939 ~1992
26264663525293278 ~1989
262653134202450099 ~1991
26265719525314398 ~1989
26265779525315598 ~1989
26266403525328078 ~1989
26266451525329038 ~1989
Exponent Prime Factor Digits Year
262666936304006339 ~1992
262668112101344899 ~1990
26266979525339598 ~1989
262673171576039039 ~1990
26267999525359998 ~1989
26268419525368398 ~1989
26269739525394798 ~1989
26269871525397438 ~1989
26270591525411838 ~1989
26270963525419278 ~1989
262714814203436979 ~1991
26271923525438478 ~1989
26272091525441838 ~1989
262732371576394239 ~1990
262732811576396879 ~1990
262735011576410079 ~1990
26273519525470398 ~1989
26273783525475678 ~1989
262738312101906499 ~1990
26274323525486478 ~1989
26274431525488638 ~1989
26274719525494398 ~1989
26275103525502078 ~1989
262751592627515919 ~1991
26275391525507838 ~1989
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25-05-04