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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
41971763839435278 ~1991
41972219839444398 ~1991
419735213357881699 ~1992
41974259839485198 ~1991
419744532518467199 ~1992
41975051839501038 ~1991
419757535876605439 ~1993
419762932518577599 ~1992
41977451839549038 ~1991
41978501201496804910 ~1994
41978939839578798 ~1991
419796972518781839 ~1992
41980331839606638 ~1991
41980643839612878 ~1991
419806634198066319 ~1992
419808532518851199 ~1992
41981063839621278 ~1991
41981399839627998 ~1991
41981711839634238 ~1991
419826172518957039 ~1992
41982971839659438 ~1991
419831332518987999 ~1992
41983379839667598 ~1991
41984171839683438 ~1991
41984759839695198 ~1991
Exponent Prime Factor Digits Year
41987411839748238 ~1991
41990309327524410310 ~1994
419903212519419279 ~1992
419904132519424799 ~1992
41990423839808478 ~1991
419906572519439439 ~1992
419909172519455039 ~1992
41991611839832238 ~1991
41991731839834638 ~1991
41991791839835838 ~1991
41992211839844238 ~1991
41992883839857678 ~1991
41992943839858878 ~1991
41994839839896798 ~1991
419961076719377139 ~1993
41996543839930878 ~1991
41996891839937838 ~1991
41997443839948878 ~1991
419984474199844719 ~1992
41999159839983198 ~1991
419995495879936879 ~1993
419997532519985199 ~1992
42000011840000238 ~1991
42000683840013678 ~1991
42001259840025198 ~1991
Exponent Prime Factor Digits Year
420013036720208499 ~1993
420014474200144719 ~1992
42002351840047038 ~1991
420037612520225679 ~1992
420041532520249199 ~1992
42005809630087135110 ~1995
42006143840122878 ~1991
42006353100815247310 ~1993
42006851840137038 ~1991
42007859840157198 ~1991
420080234200802319 ~1992
42008243840164878 ~1991
42008339840166798 ~1991
42009059840181198 ~1991
420096772520580639 ~1992
42009923840198478 ~1991
42010439840208798 ~1991
420108173360865379 ~1992
420118572520711439 ~1992
420127874201278719 ~1992
42012863840257278 ~1991
42015383840307678 ~1991
42015419840308398 ~1991
420157193361257539 ~1992
42016763840335278 ~1991
Exponent Prime Factor Digits Year
420176397563175039 ~1993
420177917563202399 ~1993
420179812521078879 ~1992
420182335882552639 ~1993
420184612521107679 ~1992
42018731840374638 ~1991
420193572521161439 ~1992
420194932521169599 ~1992
420198677563576079 ~1993
42020003840400078 ~1991
42022979840459598 ~1991
42023903840478078 ~1991
42023951840479038 ~1991
42025871840517438 ~1991
42026723840534478 ~1991
42028643840572878 ~1991
420292972521757839 ~1992
42031823840636478 ~1991
42032231411915863910 ~1995
42032591840651838 ~1991
42033143840662878 ~1991
42033371840667438 ~1991
420340514203405119 ~1992
42034103840682078 ~1991
42034211840684238 ~1991
1946
GIMPS The Prime Pages FactorDb.com
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25-05-04