Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
325043Factored
FactorDigitsBitsDate
45206209869535577281403134872891.92019-03-18 01:46:04
ECM
DigitsB1Curves
2550000280 / 280
30250000322 / 640
Estimated T-Level: 27.5 ⓘ
TF below 2^86 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski5F300
Verified (Factored)Unknown5F300
Verified (Factored)Guillermo Ballester Valor8147D42A3A5F5F300
Verified (Factored)Eivind Triel8147D42A3A5F5F307682
Verified (Factored)2002-01-15Dennis Pope8147D42A3A5F5F30260320
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-03-18ATHEB11BEE515ED01C2119290353
Verified2019-03-18kkmrkkblmbrbkEB11BEE515ED01C2125345153
History
DateUserTypeResult
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2019-03-18kkmrkkblmbrbkC-PRP
M325043/4520620986953557728140313487 : EB11BEE515ED01C2
PRP: Verified
PRP without proof (small exponent)
2019-03-18ATHC-PRP
M325043/4520620986953557728140313487 : EB11BEE515ED01C2
PRP: Verified
PRP without proof (small exponent)
2019-03-18alexF-ECM
Factor: 4520620986953557728140313487 / (ECM curve 57, B1=250000, B2=25000000, Sigma=7297432260423538)
2018-01-27Gordon SpenceNF
no factor from 2^64 to 2^65
2016-07-11mikrNF-PM1
B1=60000000, B2=3000000000, E=12
2015-12-12Gordon SpenceNF
no factor from 2^63 to 2^64
2015-12-12Gordon SpenceNF
no factor from 2^62 to 2^63
2015-07-22NRNF
no factor from 2^61 to 2^62
2013-03-09Sid & AndyNF
no factor from 2^60 to 2^61
2012-01-15alpertronNF-PM1
B1=10000000, B2=200000000, E=12
2011-08-06JossNF-PM1
B1=1426420
2009-02-06Sturle SundeNF
no factor from 2^59 to 2^60
2008-12-30Sturle SundeNF
no factor from 2^58 to 2^59