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
1862611Factored
FactorDigitsBitsDate
11919816346731340.1old
3558158239751576895532168.32020-07-28 01:06:10
250573592458141533209992374.42020-12-03 04:45:31
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 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)2017-10-04Oliver KruseCF6990D3C989C59E1013
Verified (Factored)2017-11-07kkmrkkblmbrbkCF6990D3C989C59E1164314913
Verified (Factored)2020-07-28M Miller2C7F80B8B187390C229059953
Verified (Factored)2020-08-01nordi2C7F80B8B187390C264086053
Verified2020-12-04xyuzyz2C7F80B8B187390C332451853
Verified2020-12-04Jinyuan Wang2C7F80B8B187390C3182997053
History
DateUserTypeResult
2020-12-04Jinyuan WangC-PRP
M1862611/1191981634673/355815823975157689553/25057359245814153320999 : 2C7F80B8B187390C
PRP proof power = 7
PRP: Verified
PRP proof never uploaded
2020-12-04xyuzyzC-PRP
M1862611/1191981634673/355815823975157689553/25057359245814153320999 : 2C7F80B8B187390C
PRP: Verified
PRP without proof (not generated)
2020-12-03MarkSF-ECM
Factor: 25057359245814153320999 / (ECM curve 5, B1=50000, B2=5000000, Sigma=4287767487684081)
2020-08-01nordiC-PRP
M1862611/1191981634673/355815823975157689553 : 2C7F80B8B187390C
PRP: Verified
PRP without proof (not generated)
2020-07-28M MillerC-PRP
M1862611/1191981634673/355815823975157689553 : 2C7F80B8B187390C
PRP: Verified
PRP without proof (not generated)
2020-07-28-Anonymous-F-ECM
Factor: 355815823975157689553 / (ECM curve 3, B1=50000, B2=5000000, Sigma=5159142710826754)
2017-11-07kkmrkkblmbrbkC-PRP
M1862611/1191981634673 : CF6990D3C989C59E
PRP: Verified
PRP without proof (not generated)
2017-10-04Oliver KruseC-PRP
M1862611/1191981634673 : CF6990D3C989C59E
PRP: Verified
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12