Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
2455477Factored
FactorDigitsBitsDate
4924666384957830896232168.72020-06-13 16:01:35
ECM
DigitsB1Curves
255000047 / 280
Estimated T-Level: 20.8 ⓘ
TF below 2^64 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Scott Kurowski3993760391F688EB0
Verified (Factored)Simon Burge3993760391F688EB0
Verified (Factored)2015-11-14MadPoo3993760391F688EB476902
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-06-14oodaira229EE5F78BF66019195473253
Verified2020-06-16Team_Inspector229EE5F78BF660191149795353
History
DateUserTypeResult
2020-06-16Team_InspectorC-PRP
M2455477/492466638495783089623 : 229EE5F78BF66019
PRP: Verified
PRP without proof (not generated)
2020-06-14oodairaC-PRP
M2455477/492466638495783089623 : 229EE5F78BF66019
PRP: Verified
PRP without proof (not generated)
2020-06-13GANF-ECM
Factor: 492466638495783089623 / (ECM curve 2, B1=50000, B2=5000000)
2019-07-17TJAOINF
no factor from 2^67 to 2^68
2017-07-14Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-11-14MadPooC-LL
3993760391F688EB
2015-10-25ramgeisNF
no factor from 2^65 to 2^66
2015-03-03VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-03VictordeHollanderNF
no factor from 2^63 to 2^64
2014-05-17mikrNF-PM1
B1=2382500, B2=85770100, E=12
2013-12-04Jerry HallettNF
no factor from 2^62 to 2^63
2012-06-07Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-19Oscar ÖstlinNF-PM1
B1=95000, B2=1947500, E=6
2010-12-22JossNF-PM1
B1=20000
2009-01-14Sturle SundeNF
no factor from 2^60 to 2^61