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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
20668811413376238 ~1988
20668859413377198 ~1988
20669303413386078 ~1988
206693571653548579 ~1990
20669783413395678 ~1988
20669879413397598 ~1988
20670311413406238 ~1988
206703411240220479 ~1989
206704211240225279 ~1989
20670719413414398 ~1988
20670731413414638 ~1988
20670959413419198 ~1988
20671019413420398 ~1988
20671103413422078 ~1988
20671499413429998 ~1988
206718176201545119 ~1991
206718792067187919 ~1990
20671883413437678 ~1988
20672471413449438 ~1988
206730771240384639 ~1989
20673203413464078 ~1988
20673409210868771910 ~1992
206735998682911599 ~1991
20673677161254680710 ~1992
20674331413486638 ~1988
Exponent Prime Factor Digits Year
20674763413495278 ~1988
20674931413498638 ~1988
20675471413509438 ~1988
20675639413512798 ~1988
206760312067603119 ~1990
20676119413522398 ~1988
20676431413528638 ~1988
20676611413532238 ~1988
206767073721807279 ~1990
206770916616669139 ~1991
20677619413552398 ~1988
20678159413563198 ~1988
20678351413567038 ~1988
20679023413580478 ~1988
20679251413585038 ~1988
206794011654352099 ~1990
206794191654353539 ~1990
20679551413591038 ~1988
206797971240787839 ~1989
20680199413603998 ~1988
20680259413605198 ~1988
20680931413618638 ~1988
20681663413633278 ~1988
20681891413637838 ~1988
206822931240937599 ~1989
Exponent Prime Factor Digits Year
206825531240953199 ~1989
20682671413653438 ~1988
206829731240978399 ~1989
20683139413662798 ~1988
206838131241028799 ~1989
206844371241066239 ~1989
20684519413690398 ~1988
206846692895853679 ~1990
20684879413697598 ~1988
206851992068519919 ~1990
20685239413704798 ~1988
20685503413710078 ~1988
20685503136524319910
20685551413711038 ~1988
20685683413713678 ~1988
20685971413719438 ~1988
20686691413733838 ~1988
20686751413735038 ~1988
20687279413745598 ~1988
20687951413759038 ~1988
206879697861428239 ~1991
20688071413761438 ~1988
20688263413765278 ~1988
206886171241317039 ~1989
20688659413773198 ~1988
Exponent Prime Factor Digits Year
206887131241322799 ~1989
20689211413784238 ~1988
20689703413794078 ~1988
20690339413806798 ~1988
206905071655240579 ~1990
20691479413829598 ~1988
206914791655318339
206919891655359139 ~1990
20692163413843278 ~1988
206922411655379299 ~1990
20692319413846398 ~1988
20692499413849998 ~1988
206925171241551039 ~1989
20693303413866078 ~1988
20693891413877838 ~1988
20693999413879998 ~1988
20694203413884078 ~1988
20694983413899678 ~1988
206951211241707279 ~1989
20695271413905438 ~1988
20695751413915038 ~1988
206958891655671139 ~1990
20696051413921038 ~1988
206963171241779039 ~1989
20696363413927278 ~1988
1436
GIMPS The Prime Pages FactorDb.com
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25-04-13