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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
12872081772324878 ~1988
12872423257448478 ~1987
12872933772375998 ~1988
12873041772382478 ~1988
12873083257461678 ~1987
12873197110709494310 ~1991
12873517772411038 ~1988
12873551257471038 ~1987
12873803257476078 ~1987
12874223257484478 ~1987
128742233089813539
128743271287432719 ~1988
12874633772477998 ~1988
12875003257500078 ~1987
128751291802518079 ~1989
128754972060079539 ~1989
128756691802593679 ~1989
12875771257515438 ~1987
12875903257518078 ~1987
12876161772569678 ~1988
12876179257523598 ~1987
12876491257529838 ~1987
12876659257533198 ~1987
128769531802773439 ~1989
12877223257544478 ~1987
Exponent Prime Factor Digits Year
12877379257547598 ~1987
12877703257554078 ~1987
12877883257557678 ~1987
12877981772678878 ~1988
12878111257562238 ~1987
12878483257569678 ~1987
12879239257584798 ~1987
12879257772755438 ~1988
128794093091058179 ~1989
12879481772768878 ~1988
12879623257592478 ~1987
12880151257603038 ~1987
128805231422009739311 ~1993
12880691257613838 ~1987
12880919257618398 ~1987
12881171257623438 ~1987
128812991288129919 ~1988
12881663257633278 ~1987
12881777772906638 ~1988
128820113349322879 ~1989
12882059257641198 ~1987
128821093864632719 ~1989
128822991030583939 ~1988
12882983257659678 ~1987
12883439257668798 ~1987
Exponent Prime Factor Digits Year
12883571257671438 ~1987
12884051257681038 ~1987
12884077773044638 ~1988
12884461773067678 ~1988
12884471257689438 ~1987
12884771257695438 ~1987
12884779270580359110 ~1991
128848872061581939 ~1989
128848911030791299 ~1988
12885263257705278 ~1987
12885419257708398 ~1987
128854191030833539
12885443257708878 ~1987
12885581773134878 ~1988
12885941773156478 ~1988
12885959257719198 ~1987
128862171030897379 ~1988
12886241773174478 ~1988
12886453773187198 ~1988
12886661773199678 ~1988
128867712319618799 ~1989
12886931257738638 ~1987
12887101773226078 ~1988
12887177773230638 ~1988
12887341773240478 ~1988
Exponent Prime Factor Digits Year
128875875155034819 ~1990
12887603257752078 ~1987
12887621773257278 ~1988
12887713773262798 ~1988
128878693866360719 ~1989
128880675155226819 ~1990
12888131257762638 ~1987
12888143257762878 ~1987
12888277773296638 ~1988
12888311257766238 ~1987
12888319270654699110 ~1991
12888503257770078 ~1987
12888539257770798 ~1987
12888971257779438 ~1987
12889001773340078 ~1988
12889517773371038 ~1988
128896491031171939 ~1988
12889823257796478 ~1987
12890219257804398 ~1987
128902871289028719 ~1988
12890291257805838 ~1987
12890723257814478 ~1987
12891409113444399310 ~1991
12891433773485998 ~1988
12891479257829598 ~1987
1239
GIMPS The Prime Pages FactorDb.com
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26-07-05