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
1877801Factored
FactorDigitsBitsDate
11266807823.4old
16771630925498595832812270.52021-07-14 07:02:36
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 Kruse16D98E4EA4621CA81013
Verified (Factored)2017-11-08kkmrkkblmbrbk16D98E4EA4621CA8173847513
Verified2021-07-15/r/counting30F0DFC6B86C93A4291647053
History
DateUserTypeResult
2021-07-15Ben DeloCERT
PRP Certification
Proof certified good
2021-07-15/r/countingC-PRP
M1877801/11266807/1677163092549859583281 : 30F0DFC6B86C93A4
PRP proof power = 7
PRP: Verified
Proof certified good
2021-07-14_p95holder_F-ECM
Factor: 1677163092549859583281 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-08kkmrkkblmbrbkC-PRP
M1877801/11266807 : 16D98E4EA4621CA8
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-04Oliver KruseC-PRP
M1877801/11266807 : 16D98E4EA4621CA8
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12