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

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Exponent Range:










MnStatusDetails
2245951TF
No factors below 270
TF target 262
TF below 2^73 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 9800000
B2 = 38861792970
ECM
DigitsB1Curves
2550000202 / 280
Estimated T-Level: 23.6 ⓘ
LL
StatusDateUserResidueShift
BadAlex and Nick Myrman00230
Verifiednphan141D633765B100220
Verified2002-06-09S57483141D633765B100222225637
Verified2002-06-23Mikus Grinbergs141D633765B100222050860
History
DateUserTypeResult
2024-04-19TJAOINF
no factor from 2^69 to 2^70
2023-07-15Sid & AndyNF-PM1
B1=9800000, B2=38861792970
2023-05-28JossNF-PM1
B1=1000000, B2=3799936140
2023-01-24JossNF-PM1
B1=1000000, B2=571741170
2021-07-05TJAOINF
no factor from 2^68 to 2^69
2020-11-04GdSNF-PM1
B1=3677255, B2=128703915, E=12
2019-04-01TJAOINF
no factor from 2^67 to 2^68
2017-01-05Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2015-12-05Alexander DubrovinNF-PM1
B1=1000000, B2=10000000, E=12
2015-10-27ramgeisNF
no factor from 2^65 to 2^66
2015-03-10VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-10VictordeHollanderNF
no factor from 2^63 to 2^64
2013-12-04LaurVNF
no factor from 2^62 to 2^63
2012-05-03Sebastian HornbostelNF
no factor from 2^61 to 2^62
2012-01-07Squeeky_SquirrelNF-PM1
B1=150000, B2=3262500, E=6
2011-01-18JossNF-PM1
B1=50000
2009-01-11Sturle SundeNF
no factor from 2^60 to 2^61