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
1718593Factored
FactorDigitsBitsDate
76940220987581320091962.72009-09-24 16:43:02
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 640
Estimated T-Level: 25.8 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)John LyonD118CBB16FDC17A00
Verified (Factored)1998-12-27David UnderbakkeD118CBB16FDC17A0199251
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-30alpertron759689D4F9C746E61013
Verified2017-10-19Oliver Kruse759689D4F9C746E6141881613
History
DateUserTypeResult
2017-10-19Oliver KruseC-PRP
M1718593/7694022098758132009 : 759689D4F9C746E6
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M1718593/7694022098758132009 : 759689D4F9C746E6
PRP: Verified
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12
2009-09-24SubPrimeF-ECM
Factor: 7694022098758132009