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

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MnStatusDetails
2441401Factored
FactorDigitsBitsDate
165246399186038037345132373.82020-07-07 18:50:40
ECM
DigitsB1Curves
255000057 / 280
Estimated T-Level: 21.0 ⓘ
TF below 2^65 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)John Lloyd137A49C77BF0B8630
Verified (Factored)1999-03-26Matti Kinnunen137A49C77BF0B8631095897
Verified (Factored)2018-05-24kkmrkkblmbrbk137A49C77BF0B863838369
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-07-08pew69787730EBAED6FB144107153
Verified2020-07-12Yves Bellefeuille69787730EBAED6FB142397953
History
DateUserTypeResult
2020-07-12Yves BellefeuilleC-PRP
M2441401/16524639918603803734513 : 69787730EBAED6FB
PRP: Verified
PRP without proof (not generated)
2020-07-08pewC-PRP
M2441401/16524639918603803734513 : 69787730EBAED6FB
PRP: Verified
PRP without proof (not generated)
2020-07-07GANF-ECM
Factor: 16524639918603803734513 / (ECM curve 3, B1=50000, B2=5000000, Sigma=4267072369645808)
2019-04-29TJAOINF
no factor from 2^67 to 2^68
2018-05-24kkmrkkblmbrbkC-LL
137A49C77BF0B863
2017-07-12Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-10-25ramgeisNF
no factor from 2^65 to 2^66
2015-02-27VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-27VictordeHollanderNF
no factor from 2^63 to 2^64
2014-01-19mikrNF-PM1
B1=1172000, B2=48000000, E=12
2013-12-04Jerry HallettNF
no factor from 2^62 to 2^63
2012-06-06Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-12Oscar ÖstlinNF-PM1
B1=95000, B2=1947500, E=6
2010-11-17JossNF-PM1
B1=20000
2009-01-14Sturle SundeNF
no factor from 2^60 to 2^61