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

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MnStatusDetails
4369777Factored
FactorDigitsBitsDate
3293578553188473622392168.22019-07-07 12:15:23
ECM
DigitsB1Curves
255000012 / 280
Estimated T-Level: 20.2 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Bad1998-10-18Martin Fahlgren1D3570B147192A1D0
Verified (Factored)1999-12-08Brian Murray9EE8104506338D5D179878
Verified (Factored)2001-01-08Marc Getty / Phil Fizur9EE8104506338D5D256367
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-07-08Niels_Mache_Nextcloud46E4BFBE057919EC177887453
Verified2019-07-10arnaud46E4BFBE057919EC1263678053
History
DateUserTypeResult
2023-04-17Kevin_9611NF-PM1
B1=330000, B2=221814450
2019-07-10arnaudC-PRP
M4369777/329357855318847362239 : 46E4BFBE057919EC
PRP: Verified
PRP without proof (not generated)
2019-07-08Niels_Mache_NextcloudC-PRP
M4369777/329357855318847362239 : 46E4BFBE057919EC
PRP: Verified
PRP without proof (not generated)
2019-07-07CoreyF-ECM
Factor: 329357855318847362239 / (ECM curve 3, B1=50000, B2=5000000)
2018-10-29chuenkitNF
no factor from 2^67 to 2^68
2018-05-03chuenkitNF
no factor from 2^66 to 2^67
2017-04-03Squeeky_SquirrelNF-PM1
B1=270000, B2=7897500, E=12
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-06-18snme2pm1NF
no factor from 2^65 to 2^66
2014-07-11lycornNF
no factor from 2^64 to 2^65
2014-07-10JayderNF
no factor from 2^63 to 2^64
2012-01-15GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-11-15markrNF
no factor from 2^61 to 2^62
2010-08-31markrNF-PM1
B1=95000, B2=2113750, E=6