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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
12647399252947998 ~1986
12647513758850798 ~1988
12647617758857038 ~1988
12647819252956398 ~1986
126481733035561539 ~1989
12648659252973198 ~1986
12648719252974398 ~1986
126487193035692579
12648983252979678 ~1986
126491991011935939 ~1988
12649213758952798 ~1988
12649223252984478 ~1986
12649583252991678 ~1986
126495891011967139 ~1988
12649823252996478 ~1986
12650639253012798 ~1986
12650753759045198 ~1988
12651053759063198 ~1988
12651161759069678 ~1988
12651251253025038 ~1986
12651313759078798 ~1988
12651581759094878 ~1988
12651659253033198 ~1986
12651733759103998 ~1988
126517673289459439 ~1989
Exponent Prime Factor Digits Year
12652331253046638 ~1986
12652397759143838 ~1988
126528591012228739 ~1988
12653111253062238 ~1986
12653141759188478 ~1988
12653153759189198 ~1988
12653477759208638 ~1988
12653603253072078 ~1986
126536231265362319 ~1988
12653723222705524910 ~1991
12654157759249438 ~1988
12654371253087438 ~1986
12654539253090798 ~1986
12654563253091278 ~1986
12654721759283278 ~1988
12654737759284238 ~1988
12654923253098478 ~1986
126550031265500319 ~1988
12655481759328878 ~1988
12656051253121038 ~1986
12656101759366078 ~1988
12656243253124878 ~1986
12656297759377838 ~1988
126565912278186399 ~1989
126566392278195039 ~1989
Exponent Prime Factor Digits Year
12657353759441198 ~1988
126575271012602179 ~1988
12657611253152238 ~1986
12657739364542883310 ~1992
12657791253155838 ~1986
12657803253156078 ~1986
12657863253157278 ~1986
12658357759501438 ~1988
12658631253172638 ~1986
12658837759530238 ~1988
12658861759531678 ~1988
12659219253184398 ~1986
12659723253194478 ~1986
12659771253195438 ~1986
12659963253199278 ~1986
12660721759643278 ~1988
12661021759661278 ~1988
12661633759697998 ~1988
126616992279105839 ~1989
126618192279127439 ~1989
12661877759712638 ~1988
126620571012964579 ~1988
12662651253253038 ~1986
12663023253260478 ~1986
12663191253263838 ~1986
Exponent Prime Factor Digits Year
12663241759794478 ~1988
12663251253265038 ~1986
126633596078412339 ~1990
126633891013071139 ~1988
12663743253274878 ~1986
12664319205161967910 ~1991
12664499253289998 ~1986
12664741759884478 ~1988
12664871253297438 ~1986
12664913759894798 ~1988
12665123253302478 ~1986
12665183253303678 ~1986
12665423253308478 ~1986
126654411013235299 ~1988
12665531253310638 ~1986
12665687184919030310 ~1991
12666299253325998 ~1986
12666413759984798 ~1988
12666539253330798 ~1986
12666701760002078 ~1988
12666851253337038 ~1986
12666911253338238 ~1986
12667019253340398 ~1986
12667153760029198 ~1988
12667223253344478 ~1986
1209
GIMPS The Prime Pages FactorDb.com
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26-03-15