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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
255788531534731199 ~1990
25579199511583998 ~1989
25579583511591678 ~1989
25579927353002992710 ~1993
25580063511601278 ~1989
255800771534804639 ~1990
25580111511602238 ~1989
25580603511612078 ~1989
255806931534841599 ~1990
25580939511618798 ~1989
25581299511625998 ~1989
25581443511628878 ~1989
25581971511639438 ~1989
25582019511640398 ~1989
25582079511641598 ~1989
25582163511643278 ~1989
255823011534938079 ~1990
25582751511655038 ~1989
25582919511658398 ~1989
25583219511664398 ~1989
25583951511679038 ~1989
25584263511685278 ~1989
255846792558467919 ~1991
25584731511694638 ~1989
25586339511726798 ~1989
Exponent Prime Factor Digits Year
255864892046919139 ~1990
25586579511731598 ~1989
25587203511744078 ~1989
25587563511751278 ~1989
25588379511767598 ~1989
255888615629549439 ~1991
25588883511777678 ~1989
25589951511799038 ~1989
25590503511810078 ~1989
25590863511817278 ~1989
25591091107482582310 ~1992
25591799511835998 ~1989
25591823511836478 ~1989
25591991511839838 ~1989
25592243511844878 ~1989
25592279511845598 ~1989
255925335630357279 ~1991
25593563511871278 ~1989
25593719511874398 ~1989
25593839511876798 ~1989
25594031511880638 ~1989
25594799511895998 ~1989
25595483511909678 ~1989
25595519511910398 ~1989
25595639511912798 ~1989
Exponent Prime Factor Digits Year
25595651511913038 ~1989
25595891511917838 ~1989
25596071511921438 ~1989
255967192047737539 ~1990
25597499511949998 ~1989
255978611535871679 ~1990
25598603511972078 ~1989
25599323511986478 ~1989
25599971511999438 ~1989
256005293584074079 ~1991
256006131536036799 ~1990
25600703512014078 ~1989
25601123512022478 ~1989
25601291512025838 ~1989
25601351512027038 ~1989
25601423512028478 ~1989
25601879512037598 ~1989
25602383512047678 ~1989
25602431512048638 ~1989
25602959512059198 ~1989
25603043512060878 ~1989
25603559512071198 ~1989
256036792048294339 ~1990
25603943512078878 ~1989
25604291512085838 ~1989
Exponent Prime Factor Digits Year
256050371536302239 ~1990
25605311512106238 ~1989
25605539512110798 ~1989
25605719512114398 ~1989
25606019512120398 ~1989
25606523512130478 ~1989
25606979512139598 ~1989
25607063512141278 ~1989
256074712048597699 ~1990
256079512048636099 ~1990
256079992048639939 ~1990
25608083512161678 ~1989
256084971536509839 ~1990
25608839512176798 ~1989
25609631512192638 ~1989
25610111512202238 ~1989
25610411512208238 ~1989
25610471512209438 ~1989
25611623512232478 ~1989
25611779512235598 ~1989
256119731536718399 ~1990
25612073266365559310 ~1993
256123731536742399 ~1990
25612403512248078 ~1989
25613303512266078 ~1989
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25-04-13