Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
11177Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
257744545691531444.6old
35072116845795552879698552014258029736118.12018-12-18 23:06:58
1086047366934580519242310264953144936738123.02010-04-19 15:09:21
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001293 / 9201
Estimated T-Level: 40.7
TF below 2^130 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-21Oliver Kruse1D97DF61FEFCD8852013
Verified (Factored)2017-10-02kkmrkkblmbrbk1D97DF61FEFCD8852013
Verified (Factored)2017-12-07ATH1D97DF61FEFCD8852773413
Verified2018-12-18Probably_Prime76830CF7B28EDADC3753053
Verified2018-12-21Oliver Kruse76830CF7B28EDADC31084053
History
DateUserTypeResult
2022-12-29-Anonymous-NF-PM1
B1=100000000000, B2=122192573512709700
2018-12-21Oliver KruseC-PRP
M11177/25774454569153/10860473669345805192423102649531449367/350721168457955528796985520142580297 : 76830CF7B28EDADC
PRP: Verified
PRP without proof (small exponent)
2018-12-18Probably_PrimeC-PRP
M11177/25774454569153/350721168457955528796985520142580297/10860473669345805192423102649531449367 : 76830CF7B28EDADC
PRP: Verified
PRP without proof (small exponent)
2018-12-18James HintzF-ECM
Factor: 350721168457955528796985520142580297 / (ECM curve 527, B1=3000000, B2=300000000)
2017-12-07ATHC-PRP
M11177/25774454569153/10860473669345805192423102649531449367 : 1D97DF61FEFCD885
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M11177/25774454569153/10860473669345805192423102649531449367 : 1D97DF61FEFCD885
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M11177/25774454569153/10860473669345805192423102649531449367 : 1D97DF61FEFCD885
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M11177/25774454569153/10860473669345805192423102649531449367 : 1D97DF61FEFCD885
PRP without proof (not generated)
2016-09-07kkmrkkblmbrbkNF-PM1
B1=200000000, B2=20000000000, E=12
2010-04-19James HintzF-ECM
Factor: 10860473669345805192423102649531449367