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
4178491Factored
FactorDigitsBitsDate
107303648891133.3old
16120283998731340.62008-09-30 21:34:40
5619124829192271679212168.92023-01-20 23:05:35
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-20kkmrkkblmbrbk670315C7730B031F2013
Verified (Factored)2018-01-17Oliver Kruse670315C7730B031F278495713
Verified2023-01-27Perig68EDA48090A16EA6331525953
P-1 factors
DateFactorB1B2
2023-01-20561912482919227167921337000227966310
History
DateUserTypeResult
2023-01-27Team_InspectorCERT
PRP Certification
Proof certified good
2023-01-27PerigC-PRP
M4178491/10730364889/1612028399873/561912482919227167921 : 68EDA48090A16EA6
PRP proof power = 7
PRP: Verified
Proof certified good
2023-01-20USAFSSF-PM1
Factor: 561912482919227167921 / (P-1, B1=337000, B2=227966310)
2018-01-17Oliver KruseC-PRP
M4178491/10730364889/1612028399873 : 670315C7730B031F
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M4178491/10730364889/1612028399873 : 670315C7730B031F
PRP: Verified (Factored)
PRP without proof (not generated)
2008-09-30markrF
Factor: 1612028399873