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
2659931Factored
FactorDigitsBitsDate
195840317632789802803912374.12023-01-29 00:02:06
635794871086242918133132375.82011-01-24 22:01:35
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Ken KrieselF8090C7CF3BF72530
Verified (Factored)1999-07-12Angus CameronF8090C7CF3BF72531645789
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-10-18Oliver KruseD3A9A5B875E10109110148553
Verified (Factored)2017-12-03ATHD3A9A5B875E10109184973353
Verified2023-01-31LordJuliusD3A9A5B875E101092194796853
P-1 factors
DateFactorB1B2
2023-01-2919584031763278980280391360000287380170
History
DateUserTypeResult
2023-01-31George WoltmanCERT
PRP Certification
Proof certified good
2023-01-31LordJuliusC-PRP
M2659931/19584031763278980280391/63579487108624291813313 : D3A9A5B875E10109
PRP proof power = 7
PRP: Verified
Proof certified good
2023-01-29USAFSSF-PM1
Factor: 19584031763278980280391 / (P-1, B1=360000, B2=287380170)
2017-12-03ATHC-PRP
M2659931/63579487108624291813313 : D3A9A5B875E10109
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-18Oliver KruseC-PRP
M2659931/63579487108624291813313 : D3A9A5B875E10109
PRP: Verified (Factored)
PRP without proof (not generated)
2011-01-24James HeinrichF-PM1
Factor: 63579487108624291813313
2009-06-24USAFSSNF-PM1
B1=30000, B2=420000
2009-01-26Sturle SundeNF
no factor from 2^60 to 2^61