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

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MnStatusDetails
2209013Factored
FactorDigitsBitsDate
1154083943830313014072166.62020-07-07 08:32:38
298648482010567131154034172684.62015-12-08 16:57:52
ECM
DigitsB1Curves
255000094 / 280
Estimated T-Level: 21.7
TF below 2^67 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Thomas Womack9560BF809D9E53AF0
Verified (Factored)1999-03-15henk verschoor9560BF809D9E53AF810271
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-30alpertron9BD9957D1D39FA3F1013
Verified (Factored)2017-10-25Oliver Kruse9BD9957D1D39FA3F1119665813
Verified2020-07-07M Miller89A44C1D1E9CD9532140113553
Verified2020-07-10nordi89A44C1D1E9CD953223940953
P-1 factors
DateFactorB1B2
2015-12-0829864848201056713115403417200000015000000
History
DateUserTypeResult
2022-03-09LordJuliusNF
no factor from 2^1 to 2^60
2021-07-03Dylan DelgadoNF-PM1
B1=3380000, B2=459680000
2021-06-29Dylan DelgadoNF-PM1
B1=2600000, B2=340600000
2020-07-10nordiC-PRP
M2209013/29864848201056713115403417/115408394383031301407 : 89A44C1D1E9CD953
PRP: Verified
PRP without proof (not generated)
2020-07-07M MillerC-PRP
M2209013/29864848201056713115403417/115408394383031301407 : 89A44C1D1E9CD953
PRP: Verified
PRP without proof (not generated)
2020-07-07TJAOIF
Factor: 115408394383031301407 / TF: 66-67
2017-10-25Oliver KruseC-PRP
M2209013/29864848201056713115403417 : 9BD9957D1D39FA3F
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M2209013/29864848201056713115403417 : 9BD9957D1D39FA3F
PRP: Verified
PRP without proof (not generated)
2016-04-17alpertronNF-PM1
B1=500000, B2=15000000, E=12
2015-12-08Alexander DubrovinF-PM1
Factor: 29864848201056713115403417 / (P-1, B1=2000000, B2=15000000, E=12)
2015-11-11Alexander DubrovinNF-PM1
B1=1000000, B2=2500000, E=6
2015-10-22ramgeisNF
no factor from 2^65 to 2^66
2015-03-06VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-06VictordeHollanderNF
no factor from 2^63 to 2^64
2014-10-17JossNF-PM1
B1=148112
2014-06-24JossNF-PM1
B1=119056
2013-12-04LaurVNF
no factor from 2^62 to 2^63
2011-01-08markrNF-PM1
B1=90000, B2=1665000, E=6
2010-11-10JossNF-PM1
B1=30000
2010-11-05JossNF-PM1
B1=15000
2009-01-08Sturle SundeNF
no factor from 2^61 to 2^62
2009-01-03Sturle SundeNF
no factor from 2^60 to 2^61