Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
1813121Factored
FactorDigitsBitsDate
160134846731133.9old
39562039702338343822598946012891.72020-05-24 10:32:38
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.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-03Oliver KruseF310FC0C9158AF6B1013
Verified (Factored)2017-11-05kkmrkkblmbrbkF310FC0C9158AF6B186698213
Verified2020-05-24M Miller9DFB720B84310584228325953
Verified2020-05-25marssystems9DFB720B843105842103978453
History
DateUserTypeResult
2020-05-25marssystemsC-PRP
M1813121/16013484673/3956203970233834382259894601 : 9DFB720B84310584
PRP: Verified
PRP without proof (not generated)
2020-05-24M MillerC-PRP
M1813121/16013484673/3956203970233834382259894601 : 9DFB720B84310584
PRP: Verified
PRP without proof (not generated)
2020-05-24nordiF-ECM
Factor: 3956203970233834382259894601 / (ECM curve 44, B1=50000, B2=5000000, Sigma=5582382914025906)
2017-11-05kkmrkkblmbrbkC-PRP
M1813121/16013484673 : F310FC0C9158AF6B
PRP: Verified
PRP without proof (not generated)
2017-10-03Oliver KruseC-PRP
M1813121/16013484673 : F310FC0C9158AF6B
PRP: Verified
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12