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
1173631Factored
FactorDigitsBitsDate
1295805987111236.9old
360332133020171445.02014-01-14 11:35:39
2980694944979063111858.02014-12-28 12:45:06
ECM
DigitsB1Curves
2550000280 / 280
30250000100 / 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
Verified2017-10-05Oliver KruseEB5E2001274D872E3013
Verified2017-10-17Oliver KruseEB5E2001274D872E339751413
Verified2018-01-06ATHEB5E2001274D872E376724913
P-1 factors
DateFactorB1B2
2014-12-2829806949449790631130000010000000
History
DateUserTypeResult
2018-01-06ATHC-PRP
M1173631/129580598711/36033213302017/298069494497906311 : EB5E2001274D872E
PRP: Verified
PRP without proof (not generated)
2017-10-17Oliver KruseC-PRP
M1173631/129580598711/36033213302017/298069494497906311 : EB5E2001274D872E
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1173631/129580598711/36033213302017/298069494497906311 : EB5E2001274D872E
PRP: Verified
PRP without proof (not generated)
2017-09-29Oliver KruseC-PRP
M1173631/129580598711/36033213302017/298069494497906311 : EB5E2001274D872E
PRP without proof (not generated)
2014-12-28alpertronF-PM1
Factor: 298069494497906311 / (P-1, B1=300000, B2=10000000, E=12)
2014-01-14TJAOIF
Factor: 36033213302017