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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.
Exp. Prime Factor Digits Year
1908407343513278 ~1982
1908449267182878 ~1982
1908611152688898 ~1981
1908617114517038 ~1981
1908631305380978 ~1982
190877938175597 ~1980
1908971610870738 ~1983
1908997114539838 ~1981
1909027305444338 ~1982
19091211183655039 ~1984
19091471107305279 ~1984
190922338184477 ~1980
1909279763711618 ~1983
19093091336516319 ~1984
190934338186877 ~1980
1909363190936318 ~1982
1909373267312238 ~1982
1909409572822718 ~1983
19094511069292579 ~1984
19094872444143379 ~1984
1909561114573678 ~1981
1909619954809518 ~1983
1909757458341698 ~1983
1909841114590478 ~1981
1909927190992718 ~1982
Exp. Prime Factor Digits Year
1909927649375198
190999138199837 ~1980
1910009267401278 ~1982
1910023764009218 ~1983
191006338201277 ~1980
1910119802249998 ~1983
1910131191013118 ~1982
191015938203197 ~1980
1910333114619998 ~1981
191039938207997 ~1980
19104132139662579 ~1984
191042338208477 ~1980
191066338213277 ~1980
1910669152853538 ~1981
1910837114650238 ~1981
1910941305750578 ~1982
1911017152881378 ~1981
191108338221677 ~1980
1911149573344718 ~1983
191126338225277 ~1980
1911401573420318 ~1983
19114512599573379 ~1985
1911619458788578 ~1983
1911841420605038 ~1983
19118412294209219
Exp. Prime Factor Digits Year
1911911344143998 ~1982
1911977267676798 ~1982
1912087344175678 ~1982
1912159458918178 ~1983
191225938245197 ~1980
1912373573711918 ~1983
1912387458972898 ~1983
1912453114747198 ~1981
19124531338717119
1912481114748878 ~1981
191249938249997 ~1980
1912543650264638 ~1983
191258338251677 ~1980
191267938253597 ~1980
191300338260077 ~1980
1913003459120738
19130632295675619 ~1984
1913081153046498 ~1981
1913161114789678 ~1981
191329138265837 ~1980
1913501153080098 ~1981
1913533114811998 ~1981
19137731377916579 ~1984
191381938276397 ~1980
1913917114835038 ~1981
Exp. Prime Factor Digits Year
191396338279277 ~1980
1913969612470098 ~1983
191413138282637 ~1980
191417938283597 ~1980
191437138287437 ~1980
191444338288877 ~1980
1914487306317938 ~1982
19145932412387199 ~1984
19146411072198979 ~1984
191474338294877 ~1980
1914889459573378 ~1983
1914949574484718 ~1983
191495938299197 ~1980
1914959612786898
191510338302077 ~1980
191516338303277 ~1980
19152412719259171911 ~1989
1915289459669378 ~1983
1915337114920238 ~1981
1915619459748578 ~1983
1915691153255298 ~1982
191579938315997 ~1980
191581138316237 ~1980
1915817574745118 ~1983
1915853268219438 ~1982
372
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25-05-04