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

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MnStatusDetails
519691Factored
FactorDigitsBitsDate
134856026605653160693260997672993.42020-01-25 09:01:07
ECM
DigitsB1Curves
2550000280 / 280
30250000200 / 640
Estimated T-Level: 26.6 ⓘ
TF below 2^83 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski12B10
Verified (Factored)Conrad Curry3DD921A5239FD2B10
Verified (Factored)2002-11-09S574833DD921A5239FD2B1263447
Verified (Factored)2015-04-11MadPoo3DD921A5239FD2B158358
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-01-25mikr66E313ED884E44C112774453
Verified2020-01-26marssystems66E313ED884E44C1129505753
History
DateUserTypeResult
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2020-01-26marssystemsC-PRP
M519691/13485602660565316069326099767 : 66E313ED884E44C1
PRP: Verified
PRP without proof (small exponent)
2020-01-25mikrC-PRP
M519691/13485602660565316069326099767 : 66E313ED884E44C1
PRP: Verified
PRP without proof (small exponent)
2020-01-25lycornF-ECM
Factor: 13485602660565316069326099767 / (ECM curve 88, B1=250000, B2=25000000)
2018-05-23chuenkitNF
no factor from 2^65 to 2^66
2017-11-08BloodERazorNF
no factor from 2^64 to 2^65
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-09-07Gordon SpenceNF
no factor from 2^63 to 2^64
2015-09-07Gordon SpenceNF
no factor from 2^62 to 2^63
2015-07-07NRNF
no factor from 2^61 to 2^62
2015-04-11MadPooC-LL
3DD921A5239FD2B1
2013-01-28markrNF-PM1
B1=25000000, B2=1000000000, E=12
2012-07-14JossNF-PM1
B1=1039382
2011-05-24JossNF-PM1
B1=1000000
2010-12-28Sid & AndyNF
no factor from 2^60 to 2^61