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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
28013591560271838 ~1989
28013963560279278 ~1989
280142211680853279 ~1990
280142714482283379 ~1991
28014323560286478 ~1989
28014599560291998 ~1989
28015523560310478 ~1989
28016039560320798 ~1989
28016531560330638 ~1989
280168971681013839 ~1990
280174492241395939 ~1991
28017791560355838 ~1989
28018043560360878 ~1989
28019279560385598 ~1989
280198371681190239 ~1990
28020263560405278 ~1989
28020299560405998 ~1989
28020491560409838 ~1989
28020659560413198 ~1989
28020719560414398 ~1989
28020731560414638 ~1989
28021319560426398 ~1989
28021403560428078 ~1989
28021919560438398 ~1989
28021943560438878 ~1989
Exponent Prime Factor Digits Year
28022339560446798 ~1989
280223531681341199 ~1990
28022591560451838 ~1989
28022831560456638 ~1989
280228331681369999 ~1990
28022999134510395310 ~1993
28023311560466238 ~1989
28023419560468398 ~1989
28023923560478478 ~1989
28024091560481838 ~1989
280244211681465279 ~1990
28024523560490478 ~1989
28024679560493598 ~1989
28025219560504398 ~1989
280255331681531999 ~1990
280257192802571919 ~1991
28025951560519038 ~1989
28026359560527198 ~1989
280263772242110179 ~1991
280264611008952596111 ~1995
28026503560530078 ~1989
280270032802700319 ~1991
28027511560550238 ~1989
280276972242215779 ~1991
280276973923877599
Exponent Prime Factor Digits Year
28028183560563678 ~1989
28028531560570638 ~1989
28028723560574478 ~1989
28028879560577598 ~1989
28029563560591278 ~1989
28029623560592478 ~1989
28030199560603998 ~1989
280305531681833199 ~1990
280308611681851679 ~1990
28031831560636638 ~1989
28032131560642638 ~1989
28032863560657278 ~1989
280329731681978399 ~1990
28033139560662798 ~1989
28033283560665678 ~1989
28033451560669038 ~1989
28033931560678638 ~1989
28034483560689678 ~1989
28034603560692078 ~1989
28034663560693278 ~1989
28036259560725198 ~1989
28037099560741998 ~1989
28037111560742238 ~1989
28037351560747038 ~1989
28037783560755678 ~1989
Exponent Prime Factor Digits Year
280379093925307279 ~1991
28038371560767438 ~1989
28038611560772238 ~1989
28038683560773678 ~1989
280391276729390499 ~1992
28039439560788798 ~1989
28039523560790478 ~1989
28039883560797678 ~1989
28040279560805598 ~1989
28041011560820238 ~1989
28041371560827438 ~1989
280413731682482399 ~1990
280426612243412899 ~1991
280429677291171439 ~1992
28044011560880238 ~1989
28044179560883598 ~1989
28044239560884798 ~1989
28045091560901838 ~1989
28045379560907598 ~1989
28045403560908078 ~1989
28045499560909998 ~1989
28045931560918638 ~1989
28047083560941678 ~1989
28047863560957278 ~1989
28048343560966878 ~1989
1664
GIMPS The Prime Pages FactorDb.com
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25-04-13