Marin Mersenne 2^P-1
Username
Password
Forgot password?
Black
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
1878803Factored
FactorDigitsBitsDate
226395761511134.4old
1008353754986777665955272476.42020-10-13 12:25:11
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 Kruse1FFE71957630C37C1013
Verified (Factored)2017-11-08ATH1FFE71957630C37C1148166613
Verified2020-10-13mrh3BB4A6FF2D42E9612183244153
History
DateUserTypeResult
2020-10-13Ben DeloCERT
PRP Certification
Proof certified good
2020-10-13mrhC-PRP
M1878803/22639576151/100835375498677766595527 : 3BB4A6FF2D42E961
PRP proof power = 7
PRP: Verified
Proof certified good
2020-10-13Chang Chia-TcheF-ECM
Factor: 100835375498677766595527 / (ECM curve 7, B1=50000, B2=5000000, Sigma=292408396553759)
2017-11-08ATHC-PRP
M1878803/22639576151 : 1FFE71957630C37C
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-04Oliver KruseC-PRP
M1878803/22639576151 : 1FFE71957630C37C
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12