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

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Exponent Range:










MnStatusDetails
1731929Factored
FactorDigitsBitsDate
12534144938135274204712270.12020-05-13 03:12:28
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Ed Knapton3D9D403C86BD26CD0
Verified (Factored)1999-02-07W. Izatt3D9D403C86BD26CD1453833
Verified (Factored)2015-07-18MadPoo3D9D403C86BD26CD893963
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-05-13M Miller438EE82D2E2AB0AF1168427353
Verified2020-05-15arnaud438EE82D2E2AB0AF1116706053
History
DateUserTypeResult
2020-05-15arnaudC-PRP
M1731929/1253414493813527420471 : 438EE82D2E2AB0AF
PRP: Verified
PRP without proof (not generated)
2020-05-13M MillerC-PRP
M1731929/1253414493813527420471 : 438EE82D2E2AB0AF
PRP: Verified
PRP without proof (not generated)
2020-05-13mnd9F-ECM
Factor: 1253414493813527420471 / (ECM curve 3, B1=50000, B2=5000000, Sigma=8278326884381011)
2019-08-06TJAOINF
no factor from 2^67 to 2^68
2018-10-17JossNF-PM1
B1=1890916, B2=190512190, E=12
2018-10-11JossNF-PM1
B1=1890916, B2=173192900, E=12
2018-10-03JossNF-PM1
B1=1890916, B2=17319290, E=12
2018-06-04TJAOINF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-09-18mikrNF-PM1
B1=3642200, B2=123456789, E=12
2015-09-15JossNF-PM1
B1=1719015
2015-09-03ramgeisNF
no factor from 2^65 to 2^66
2015-07-27JossNF-PM1
B1=1562741
2015-07-21JossNF-PM1
B1=1420674
2015-07-18MadPooC-LL
3D9D403C86BD26CD
2015-07-07JossNF-PM1
B1=1291522
2015-06-25JossNF-PM1
B1=1174111
2015-06-08JossNF-PM1
B1=1067374
2015-05-26JossNF-PM1
B1=970340
2015-05-22JossNF-PM1
B1=882128
2015-05-07JossNF-PM1
B1=801935
2015-05-04snme2pm1NF
no factor from 2^64 to 2^65
2015-05-04snme2pm1NF
no factor from 2^63 to 2^64
2015-05-01JossNF-PM1
B1=729032
2015-04-08JossNF-PM1
B1=602507
2015-03-15JossNF-PM1
B1=497940
2015-03-08JossNF-PM1
B1=452673
2015-02-22JossNF-PM1
B1=411521
2015-02-20JossNF-PM1
B1=374110
2015-02-12JossNF-PM1
B1=340100
2015-01-29JossNF-PM1
B1=281075
2015-01-27JossNF-PM1
B1=255523
2014-12-02JossNF-PM1
B1=211177
2014-09-10JossNF-PM1
B1=174118
2014-05-06JossNF-PM1
B1=137059
2014-04-04JossNF-PM1
B1=100000
2011-02-07Carsten KossendeyNF-PM1
B1=95000, B2=1543750, E=6
2010-11-18GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-23Architects CubedNF
no factor from 2^60 to 2^61