Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
327307Factored
FactorDigitsBitsDate
739414634536941406555063268486331102.52019-03-19 10:22:51
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000168 / 1566
Estimated T-Level: 30.5 ⓘ
TF below 2^96 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski38300
Verified (Factored)Unknown38300
Verified (Factored)Guillermo Ballester ValorF1850A57D6B0B8300
Verified (Factored)Klaus KastensF1850A57D6B0B8300
Verified (Factored)Eivind TrielF1850A57D6B0B830185002
Verified (Factored)2016-06-01MadPooF1850A57D6B0B830129477
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-03-20artorollo0EF3064F2C60FFE8123067353
Verified2019-03-20kkmrkkblmbrbk0EF3064F2C60FFE8124082053
History
DateUserTypeResult
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2019-03-20kkmrkkblmbrbkC-PRP
M327307/7394146345369414065550632684863 : 0EF3064F2C60FFE8
PRP: Verified
PRP without proof (small exponent)
2019-03-20artorolloC-PRP
M327307/7394146345369414065550632684863 : 0EF3064F2C60FFE8
PRP: Verified
PRP without proof (small exponent)
2019-03-19alexF-ECM
Factor: 7394146345369414065550632684863 / (ECM curve 486, B1=250000, B2=25000000, Sigma=821775636856554)
2018-01-27Gordon SpenceNF
no factor from 2^64 to 2^65
2016-07-12mikrNF-PM1
B1=60000000, B2=3000000000, E=12
2016-06-01MadPooC-LL
F1850A57D6B0B830
2015-12-13Gordon SpenceNF
no factor from 2^63 to 2^64
2015-12-13Gordon SpenceNF
no factor from 2^62 to 2^63
2015-07-22NRNF
no factor from 2^61 to 2^62
2013-03-17Sid & AndyNF
no factor from 2^60 to 2^61
2012-01-14alpertronNF-PM1
B1=10000000, B2=200000000, E=12
2011-08-06JossNF-PM1
B1=1413640
2009-02-06Sturle SundeNF
no factor from 2^59 to 2^60
2008-12-30Sturle SundeNF
no factor from 2^58 to 2^59