Marin Mersenne 2^P-1
Username
Password
Forgot password?
Blue
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
2686267Factored
FactorDigitsBitsDate
29226672077926227597387612581.32020-08-06 20:08:18
ECM
DigitsB1Curves
255000042 / 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)Takahiro Shakushi523B7E5E72931BC00
Verified (Factored)Mike Curtis523B7E5E72931BC00
Verified (Factored)1999-04-23MFS Software523B7E5E72931BC0624886
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-08-07M Miller371713ED2186489C1217503353
Verified2020-08-08LOBES371713ED2186489C126400353
History
DateUserTypeResult
2020-08-08LOBESC-PRP
M2686267/2922667207792622759738761 : 371713ED2186489C
PRP: Verified
PRP without proof (not generated)
2020-08-07M MillerC-PRP
M2686267/2922667207792622759738761 : 371713ED2186489C
PRP: Verified
PRP without proof (not generated)
2020-08-06GANF-ECM
Factor: 2922667207792622759738761 / (ECM curve 3, B1=50000, B2=5000000, Sigma=8188189779661197)
2019-11-17masserNF-PM1
B1=2000000, B2=50000000, E=12
2019-04-29TJAOINF
no factor from 2^67 to 2^68
2018-07-09JossNF-PM1
B1=670000, B2=6700000, E=6
2017-09-13Gordon SpenceNF
no factor from 2^66 to 2^67
2017-04-12JossNF-PM1
B1=335000, B2=3350000, E=6
2016-12-20JossNF-PM1
B1=201000
2016-06-17JossNF-PM1
B1=167500, B2=4567500, E=6
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2016-01-26ramgeisNF
no factor from 2^65 to 2^66
2015-02-23VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-23VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-14dbaughNF
no factor from 2^62 to 2^63
2012-05-07markrNF
no factor from 2^61 to 2^62
2011-02-02markrNF-PM1
B1=105000, B2=2283750, E=6
2010-12-26JossNF-PM1
B1=30000
2010-12-22JossNF-PM1
B1=20000
2009-02-01Sturle SundeNF
no factor from 2^60 to 2^61