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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
1095257Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
61334393825.9old
2472942292969031547.82014-03-18 12:45:07
4143142645672953638812168.52017-05-26 07:25:35
44125591330428907588546069512891.82018-08-24 12:38:20
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
StatusDateUserResidueShiftTypeBase
Verified (Factored)2025-09-01KrieselF0B85005FE2B276F013
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-05Oliver Kruse530C4C796AB025D13013
Verified (Factored)2017-10-19kkmrkkblmbrbk530C4C796AB025D1383534413
Verified2018-08-25ANONYMOUSF0B85005FE2B276F431544053
Verified2018-08-28Oliver KruseF0B85005FE2B276F496844053
History
DateUserTypeResult
2025-09-02La GüiraCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-01KrieselC-PRP
F0B85005FE2B276F
PRP proof power = 6
PRP: Verified (Factored)
Proof certified good
2024-10-07timc995NF-PM1
B1=2000000, B2=63130867800
2018-08-28Oliver KruseC-PRP
M1095257/61334393/247294229296903/414314264567295363881/4412559133042890758854606951 : F0B85005FE2B276F
PRP: Verified
PRP without proof (not generated)
2018-08-25ANONYMOUSC-PRP
M1095257/61334393/247294229296903/414314264567295363881/4412559133042890758854606951 : F0B85005FE2B276F
PRP: Verified
PRP without proof (not generated)
2018-08-24TJAOIF-ECM
Factor: 4412559133042890758854606951 / (ECM curve 106, B1=50000, B2=5000000)
2017-10-19kkmrkkblmbrbkC-PRP
M1095257/61334393/247294229296903/414314264567295363881 : 530C4C796AB025D1
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1095257/61334393/247294229296903/414314264567295363881 : 530C4C796AB025D1
PRP: Verified
PRP without proof (not generated)
2017-09-29Oliver KruseC-PRP
M1095257/61334393/247294229296903/414314264567295363881 : 530C4C796AB025D1
PRP without proof (not generated)
2017-05-26TJAOIF-ECM
Factor: 414314264567295363881 / (ECM curve 31, B1=50000, B2=5000000)
2014-03-18TJAOIF
Factor: 247294229296903