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
1939363Factored
FactorDigitsBitsDate
557679513148048732792065.62008-11-14 16:01:53
ECM
DigitsB1Curves
2550000267 / 280
Estimated T-Level: 24.8 ⓘ
TF below 2^77 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Robert KulagowskiC0AB57B72B4C54010
Verified (Factored)1999-01-02Jakob TrierC0AB57B72B4C5401400033
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-05Oliver KruseA1B4F5B3D5DEC9DF1013
Verified2017-11-15kkmrkkblmbrbkA1B4F5B3D5DEC9DF1169035813
History
DateUserTypeResult
2017-11-15kkmrkkblmbrbkC-PRP
M1939363/55767951314804873279 : A1B4F5B3D5DEC9DF
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1939363/55767951314804873279 : A1B4F5B3D5DEC9DF
PRP: Verified
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12
2008-11-14Chang Chia-TcheF-ECM
Factor: 55767951314804873279