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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
18765731375314638 ~1988
187660213002563379 ~1990
18766211375324238 ~1988
18766463375329278 ~1988
18766763375335278 ~1988
18766883375337678 ~1988
18766931375338638 ~1988
187671373002741939 ~1990
187672913378112399 ~1990
187678971501431779 ~1989
18767999375359998 ~1988
18768479375369598 ~1988
18768719375374398 ~1988
18768803375376078 ~1988
18769259375385198 ~1988
18769319375386398 ~1988
18769571375391438 ~1988
18769643375392878 ~1988
18769799375395998 ~1988
18769871375397438 ~1988
18770039375400798 ~1988
187700391501603139
18770963375419278 ~1988
187710371126262239 ~1989
18771143375422878 ~1988
Exponent Prime Factor Digits Year
187714131126284799 ~1989
18771803375436078 ~1988
187719239385961519 ~1991
18772511375450238 ~1988
18772619375452398 ~1988
18772739375454798 ~1988
187728411501827299 ~1989
187729374505504899 ~1990
18773291375465838 ~1988
187734311877343119 ~1989
18773663375473278 ~1988
187740431877404319 ~1989
18774191375483838 ~1988
187741933003870899 ~1990
18774263375485278 ~1988
18774551375491038 ~1988
18774599375491998 ~1988
18775079375501598 ~1988
18775331375506638 ~1988
18775943375518878 ~1988
18776183375523678 ~1988
187762871877628719 ~1989
18776651375533038 ~1988
18777623375552478 ~1988
18778139375562798 ~1988
Exponent Prime Factor Digits Year
187790211126741279 ~1989
18779171375583438 ~1988
187792811126756879 ~1989
187793331126759999 ~1989
187795033004720499 ~1990
18780059375601198 ~1988
18780263375605278 ~1988
187803471502427779 ~1989
18780383375607678 ~1988
18780539375610798 ~1988
18781151375623038 ~1988
187815371126892239 ~1989
187815716010102739 ~1991
187816211126897279 ~1989
18781979375639598 ~1988
18782891375657838 ~1988
18782999375659998 ~1988
187833536010672979 ~1991
187834971127009839 ~1989
18783731375674638 ~1988
18783899375677998 ~1988
18784091375681838 ~1988
187842531127055199 ~1989
187845611127073679 ~1989
18785111375702238 ~1988
Exponent Prime Factor Digits Year
18785219375704398 ~1988
187856531127139199 ~1989
18785999375719998 ~1988
18786023375720478 ~1988
18786337221678776710 ~1992
187864573005833139 ~1990
187866131127196799 ~1989
187866611127199679 ~1989
187870071502960579 ~1989
187870791502966339 ~1989
18787283375745678 ~1988
18787319375746398 ~1988
18787511375750238 ~1988
187878411127270479 ~1989
187879911503039299 ~1989
18788279375765598 ~1988
18788543375770878 ~1988
18788603375772078 ~1988
187887291503098339 ~1989
187890531127343199 ~1989
18789059375781198 ~1988
18789359375787198 ~1988
18789371375787438 ~1988
18789923375798478 ~1988
18789971375799438 ~1988
1393
GIMPS The Prime Pages FactorDb.com
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25-07-08