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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
20696411413928238 ~1988
206971011241826079 ~1989
20697359413947198 ~1988
20697779413955598 ~1988
20698043413960878 ~1988
20698211413964238 ~1988
20698679413973598 ~1988
20698883413977678 ~1988
206997131241982799 ~1989
20699879413997598 ~1988
20699891413997838 ~1988
207001816210054319 ~1991
20700191414003838 ~1988
20701139414022798 ~1988
20701451414029038 ~1988
20701823414036478 ~1988
207022931242137599 ~1989
207023294554512399 ~1991
20702411414048238 ~1988
20702483414049678 ~1988
20703191414063838 ~1988
207033011242198079 ~1989
207036011242216079 ~1989
207045171656361379 ~1990
20704583414091678 ~1988
Exponent Prime Factor Digits Year
20704903198767068910 ~1992
207051313312820979 ~1990
207052611242315679 ~1989
20705423414108478 ~1988
20705879414117598 ~1988
207062691656501539 ~1990
20706503414130078 ~1988
207065571656524579 ~1990
20706557712305560910
207066611242399679 ~1989
20706661492818531910
20706683414133678 ~1988
20707019414140398 ~1988
207072771242436639 ~1989
20707331414146638 ~1988
207073671656589379 ~1990
20707451414149038 ~1988
20707619414152398 ~1988
207078473727412479 ~1990
20707859414157198 ~1988
207080211242481279 ~1989
207086931242521599 ~1989
20709203414184078 ~1988
20709239414184798 ~1988
207092511656740099 ~1990
Exponent Prime Factor Digits Year
207094632070946319 ~1990
20709779414195598 ~1988
20710559414211198 ~1988
20710643414212878 ~1988
207110571242663439 ~1989
20711123414222478 ~1988
207115911656927299 ~1990
20711651414233038 ~1988
20711699414233998 ~1988
207119091656952739 ~1990
20712551414251038 ~1988
20713019414260398 ~1988
20713799414275998 ~1988
20714951414299038 ~1988
20715059414301198 ~1988
207152211242913279 ~1989
207155811242934879 ~1989
20715923414318478 ~1988
20715983414319678 ~1988
20716103414322078 ~1988
207161275386193039 ~1991
207165891657327139 ~1990
20716739414334798 ~1988
207167571243005439 ~1989
20716919414338398 ~1988
Exponent Prime Factor Digits Year
20716921281750125710 ~1993
207171432071714319 ~1990
20717159414343198 ~1988
20717219414344398 ~1988
207175972900463599 ~1990
20717663414353278 ~1988
20717843414356878 ~1988
207179531243077199 ~1989
207180113729241999 ~1990
20718311414366238 ~1988
20718419414368398 ~1988
20718479414369598 ~1988
20718851414377038 ~1988
20719631414392638 ~1988
20719763414395278 ~1988
20720039414400798 ~1988
20720519414410398 ~1988
207205491657643939 ~1990
207207171243243039 ~1989
207207192072071919 ~1990
20721131414422638 ~1988
207215113315441779 ~1990
20721611414432238 ~1988
207219475387706239 ~1991
20721983414439678 ~1988
1437
GIMPS The Prime Pages FactorDb.com
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25-04-13