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

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Exponent Range:










MnStatusDetails
1799573TF
No factors below 268
TF target 261
TF below 2^81 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 27500000
B2 = 476575649550
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 640
Estimated T-Level: 25.8
LL
StatusDateUserResidueShift
VerifiedPaul F. Bird55555D6E64997CFB0
Verified1998-12-21Keith Mitchell55555D6E64997CFB1240350
Verified2015-07-04MadPoo55555D6E64997CFB1097638
History
DateUserTypeResult
2023-06-14linamentNF-PM1
B1=27500000, B2=476575649550
2022-08-08masserNF-PM1
B1=27000000, B2=69181899150
2022-08-06masserNF-PP1
Start=163/59, B1=1600000, B2=57600000
2019-06-10TJAOINF
no factor from 2^67 to 2^68
2018-09-17JossNF-PM1
B1=1799573, B2=179957300, E=12
2017-04-24TJAOINF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-09-13ramgeisNF
no factor from 2^65 to 2^66
2015-07-04MadPooC-LL
55555D6E64997CFB
2015-06-18mikrNF-PM1
B1=2475400, B2=86660000, E=12
2015-05-15snme2pm1NF
no factor from 2^64 to 2^65
2015-05-15snme2pm1NF
no factor from 2^63 to 2^64
2014-09-19JossNF-PM1
B1=171332
2014-05-09JossNF-PM1
B1=135666
2011-02-11Carsten KossendeyNF-PM1
B1=100000, B2=1650000, E=6
2010-12-13GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-20Architects CubedNF
no factor from 2^60 to 2^61