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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
1865881Factored
FactorDigitsBitsDate
41049383825.3old
901803252376759911756.32015-03-25 12:46:01
30842605371144984718332271.42020-12-13 03:27:54
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 KruseEBAB7429CF4CDB1F2013
Verified (Factored)2017-11-07kkmrkkblmbrbkEBAB7429CF4CDB1F279426913
Verified2020-12-13Kirill FrolovF0823D3FB6D469CC3120497753
History
DateUserTypeResult
2020-12-13curtiscCERT
PRP Certification
Proof certified good
2020-12-13Kirill FrolovC-PRP
M1865881/41049383/90180325237675991/3084260537114498471833 : F0823D3FB6D469CC
PRP proof power = 7
PRP: Verified
Proof certified good
2020-12-13_p95holder_F-ECM
Factor: 3084260537114498471833 / (ECM curve 4, B1=50000, B2=5000000)
2017-11-07kkmrkkblmbrbkC-PRP
M1865881/41049383/90180325237675991 : EBAB7429CF4CDB1F
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-04Oliver KruseC-PRP
M1865881/41049383/90180325237675991 : EBAB7429CF4CDB1F
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12
2015-03-25TJAOIF
Factor: 90180325237675991 / TF: 56-57