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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
2518783251878318 ~1983
2518793151127598 ~1982
251882350376477 ~1981
2518823806023378
2518949352652878 ~1983
25189731561763279 ~1985
25189732569352479
2519021806086738 ~1984
2519047604571298 ~1984
2519107251910718 ~1983
251917150383437 ~1981
2519177151150638 ~1982
2519189201535138 ~1982
2519221151153278 ~1982
2519369755810718 ~1984
2519453151167198 ~1982
2519453352723438
251957950391597 ~1981
251959150391837 ~1981
251960350392077 ~1981
251965150393037 ~1981
2519747453554478 ~1983
2519767251976718 ~1983
25198731562321279 ~1985
2520121151207278 ~1982
Exp. Prime Factor Digits Year
2520257604861698 ~1984
252026350405277 ~1981
252038350407677 ~1981
25204332822884979 ~1985
2520443806541778 ~1984
252050350410077 ~1981
252067150413437 ~1981
2520689604965378 ~1984
2520697151241838 ~1982
252077950415597 ~1981
2520781151246878 ~1982
2520853403336498 ~1983
2520971201677698 ~1982
252101950420397 ~1981
25214172370131999 ~1985
252145150429037 ~1981
2521499806879698 ~1984
2521711252171118 ~1983
2521817151309038 ~1982
2521949201755938 ~1982
252197950439597 ~1981
2522057151323438 ~1982
2522119605308578 ~1984
2522237151334238 ~1982
25223631059392479 ~1984
Exp. Prime Factor Digits Year
252254350450877 ~1981
2522753151365198 ~1982
2522831807305938 ~1984
2523211403713778 ~1983
2523569807542098 ~1984
2523707454267278 ~1983
25239591211500339 ~1984
2524069757220718 ~1984
252413950482797 ~1981
252419950483997 ~1981
2524297151457838 ~1982
2524477403916338 ~1983
2524649201971938 ~1982
2524673151480398 ~1982
2524673353454238
2524747252474718 ~1983
252475150495037 ~1981
252481150496237 ~1981
25249132019930419 ~1985
252497950499597 ~1981
2525053757515918 ~1984
25251619848127919 ~1987
252527950505597 ~1981
2525417151525038 ~1982
2525489353568478 ~1983
Exp. Prime Factor Digits Year
2525507606121698 ~1984
2525647404103538 ~1983
2526049606251778 ~1984
25260491010419619
252629950525997 ~1981
2526361151581678 ~1982
252637150527437 ~1981
252638350527677 ~1981
2526521151591278 ~1982
2526571252657118 ~1983
2526583252658318 ~1983
2526607252660718 ~1983
2526653151599198 ~1982
2526697151601838 ~1982
2526743656953198 ~1984
2526847606443298 ~1984
2526893151613598 ~1982
252698350539677 ~1981
2527013353781838 ~1983
2527037151622238 ~1982
2527037202162978
2527061202164898 ~1982
2527297151637838 ~1982
252740350548077 ~1981
2527409808770898 ~1984
464
GIMPS The Prime Pages FactorDb.com
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26-07-19