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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
1252790392505580799 ~1994
125279657175391519910 ~1996
125280929400898972910 ~1997
1252874992505749999 ~1994
125291147100232917710 ~1996
1252918217517509279 ~1995
1252954192505908399 ~1994
1253013832506027679 ~1994
1253021937518131599 ~1995
1253064112506128239 ~1994
125313073300751375310 ~1997
1253137192506274399 ~1994
125315579225568042310 ~1997
1253169592506339199 ~1994
1253204392506408799 ~1994
125321327100257061710 ~1996
1253222512506445039 ~1994
1253238112506476239 ~1994
1253244112506488239 ~1994
1253246512506493039 ~1994
125327039300784893710 ~1997
125330591100264472910 ~1996
1253341377520048239 ~1995
1253370112506740239 ~1994
125340247125340247110 ~1996
Exponent Prime Factor Digits Year
1253408632506817279 ~1994
1253437617520625679 ~1995
1253446192506892399 ~1994
1253474992506949999 ~1994
125351983125351983110 ~1996
125352391125352391110 ~1996
1253555392507110799 ~1994
1253578192507156399 ~1994
1253620432507240879 ~1994
1253632792507265599 ~1994
1253639392507278799 ~1994
1253659792507319599 ~1994
1253664411278737698311 ~1998
1253678392507356799 ~1994
125370659100296527310 ~1996
1253709232507418479 ~1994
1253749192507498399 ~1994
1253758432507516879 ~1994
1253786392507572799 ~1994
125378749902726992910 ~1998
1253812194012199008111 ~2000
1253857912507715839 ~1994
1253861992507723999 ~1994
1253916712507833439 ~1994
125400637501602548110 ~1997
Exponent Prime Factor Digits Year
125404127100323301710 ~1996
1254085137524510799 ~1995
1254134417524806479 ~1995
1254167512508335039 ~1994
1254200512508401039 ~1994
125421827326096750310 ~1997
1254236632508473279 ~1994
1254241792508483599 ~1994
1254246832508493679 ~1994
1254281512508563039 ~1994
1254303232508606479 ~1994
1254321232508642479 ~1994
1254337977526027839 ~1995
1254370792508741599 ~1994
1254373912508747839 ~1994
125438567100350853710 ~1996
1254395632508791279 ~1994
1254405712508811439 ~1994
1254411112508822239 ~1994
1254414832508829679 ~1994
1254426232508852479 ~1994
1254427432508854879 ~1994
1254486232508972479 ~1994
1254492232508984479 ~1994
1254500577527003439 ~1995
Exponent Prime Factor Digits Year
1254534832509069679 ~1994
1254597232509194479 ~1994
1254603832509207679 ~1994
125461993501847972110 ~1997
1254736432509472879 ~1994
1254751912509503839 ~1994
1254779817528678879 ~1995
1254798592509597199 ~1994
125481977100385581710 ~1996
1254841192509682399 ~1994
125484691125484691110 ~1996
1254848392509696799 ~1994
1254897832509795679 ~1994
1254901912509803839 ~1994
1254928792509857599 ~1994
1254953537529721199 ~1995
125497289376491867110 ~1997
1255032112510064239 ~1994
1255038112510076239 ~1994
1255069192510138399 ~1994
1255106992510213999 ~1994
1255127632510255279 ~1994
1255144192510288399 ~1994
1255173777531042639 ~1995
125519159301245981710 ~1997
2521
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25-04-13