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

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MnStatusDetails
5384339Factored
FactorDigitsBitsDate
97468587744813874100902750949151892908139129.52019-12-11 19:16:56
ECM
DigitsB1Curves
25500009 / 280
Estimated T-Level: 20.2
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-07-11Bartholomew BarkerD56E01ADA84FF7910
Verified (Factored)2000-10-07John AndersonD56E01ADA84FF7914038555
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2019-12-11mrh107BF197BFB3769C187836553
Verified2019-12-13arnaud107BF197BFB3769C1352777553
P-1 factors
DateFactorB1B2
2019-12-11974685877448138741009027509491518929081100000022500000
History
DateUserTypeResult
2019-12-13arnaudC-PRP
M5384339/974685877448138741009027509491518929081 : 107BF197BFB3769C
PRP: Verified
PRP without proof (not generated)
2019-12-11mrhC-PRP
M5384339/974685877448138741009027509491518929081 : 107BF197BFB3769C
PRP: Verified
PRP without proof (not generated)
2019-12-11KingF-PM1
Factor: 974685877448138741009027509491518929081 / (P-1, B1=1000000, B2=22500000, E=12)
2019-07-08Ivan MNF-PM1
B1=85000, B2=1211250, E=6
2018-06-19ramgeisNF
no factor from 2^67 to 2^68
2016-08-12Gordon SpenceNF
no factor from 2^66 to 2^67
2015-08-20snme2pm1NF
no factor from 2^65 to 2^66
2014-12-25VictordeHollanderNF
no factor from 2^64 to 2^65
2014-12-25VictordeHollanderNF
no factor from 2^63 to 2^64
2010-05-11Squeeky_SquirrelNF-PM1
B1=60000, B2=1020000, E=6
2009-05-19GrunwalderGIMPNF
no factor from 2^62 to 2^63