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

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MnStatusDetails
3061111Factored
FactorDigitsBitsDate
327325603628135783604972374.82021-04-10 07:57:46
ECM
DigitsB1Curves
255000055 / 280
Estimated T-Level: 21.0
TF below 2^65 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Rene LaPointeEA8160FFC908CB6B0
Verified (Factored)1999-06-06Gary SamadEA8160FFC908CB6B1384675
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-04-1012345678912345678996CD4C8E57DB80CF199127353
History
DateUserTypeResult
2022-04-10oodairaNF-PM1
B1=32462415, B2=1850357655, E=12
2022-02-06JossNF-PM1
B1=1000000, B2=119912100
2022-01-20JossNF
no factor from 2^67 to 2^68
2021-04-10curtiscCERT
PRP Certification
Proof certified good
2021-04-10123456789123456789C-PRP
M3061111/32732560362813578360497 : 96CD4C8E57DB80CF
PRP proof power = 7
PRP: Verified
Proof certified good
2021-04-10daveward2005F-ECM
Factor: 32732560362813578360497 / (ECM curve 2, B1=50000, B2=5000000, Sigma=924724661796746)
2021-04-06TJAOINF
no factor from 2^68 to 2^69
2018-07-30ramgeisNF
no factor from 2^67 to 2^68
2017-11-17mikrNF-PM1
B1=3000000, B2=100000000, E=12
2017-05-09Gordon SpenceNF
no factor from 2^66 to 2^67
2016-03-25Squeeky_SquirrelNF-PM1
B1=205000, B2=5740000, E=12
2015-06-06ThaNF
no factor from 2^65 to 2^66
2015-02-07VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-07VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2011-10-06Sid & AndyNF
no factor from 2^61 to 2^62
2010-09-25markrNF-PM1
B1=110000, B2=2447500, E=6
2009-02-13Sturle SundeNF
no factor from 2^60 to 2^61