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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
20637863412757278 ~1988
20638283412765678 ~1988
206382836604250579
206383796604281299 ~1991
20638619412772398 ~1988
206387571238325439 ~1989
20638811412776238 ~1988
206390771238344639 ~1989
20639219412784398 ~1988
20639231412784638 ~1988
20639471412789438 ~1988
20639483412789678 ~1988
20640563412811278 ~1988
206407334953775939 ~1991
206411393715405039 ~1990
206416313715493599 ~1990
206417271651338179 ~1990
206417274954014499
20641811412836238 ~1988
206421771238530639 ~1989
206425611238553679 ~1989
206425972889963599 ~1990
206430611238583679 ~1989
20643251412865038 ~1988
20643323412866478 ~1988
Exponent Prime Factor Digits Year
20643611412872238 ~1988
206441534954596739 ~1991
20644223412884478 ~1988
20644391412887838 ~1988
20645843412916878 ~1988
206459173303346739 ~1990
206459211238755279 ~1989
20646011412920238 ~1988
20646539412930798 ~1988
20646611412932238 ~1988
20647631412952638 ~1988
20647703412954078 ~1988
20647883412957678 ~1988
206479191651833539 ~1990
20648219412964398 ~1988
206494811238968879 ~1989
20649851412997038 ~1988
206500131239000799 ~1989
20650043413000878 ~1988
20650139413002798 ~1988
206501871652014979 ~1990
206503611239021679 ~1989
20650379413007598 ~1988
20650439413008798 ~1988
20650559413011198 ~1988
Exponent Prime Factor Digits Year
20650583413011678 ~1988
20650823413016478 ~1988
20651063413021278 ~1988
20651759413035198 ~1988
20652239413044798 ~1988
206522712065227119 ~1990
20652311413046238 ~1988
20652899413057998 ~1988
20653823413076478 ~1988
206543232065432319 ~1990
206544771239268639 ~1989
206544771652358179
20654951413099038 ~1988
20654999413099998 ~1988
20655143413102878 ~1988
20655203413104078 ~1988
20656463413129278 ~1988
20656589111545580710 ~1992
20656799413135998 ~1988
20657603413152078 ~1988
20658299413165998 ~1988
206589971239539839 ~1989
206596011239576079 ~1989
20659763413195278 ~1988
20659799413195998 ~1988
Exponent Prime Factor Digits Year
20659871413197438 ~1988
20660483413209678 ~1988
20660879413217598 ~1988
206611911652895299 ~1990
20661419413228398 ~1988
20661551413231038 ~1988
206619593719152639 ~1990
206623071652984579 ~1990
206623934958974339 ~1991
20662619413252398 ~1988
20662643413252878 ~1988
20662931413258638 ~1988
20662979413259598 ~1988
20663183413263678 ~1988
20663603413272078 ~1988
20663759413275198 ~1988
20664431413288638 ~1988
20664659413293198 ~1988
206653632066536319 ~1990
20665451413309038 ~1988
20666759413335198 ~1988
20668139413362798 ~1988
20668331413366638 ~1988
20668451413369038 ~1988
20668799413375998 ~1988
1435
GIMPS The Prime Pages FactorDb.com
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25-04-13