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
1711687Factored
FactorDigitsBitsDate
4127889675342218850172168.52014-02-22 18:36:30
ECM
DigitsB1Curves
2550000280 / 280
30250000136 / 640
Estimated T-Level: 26.1 ⓘ
TF below 2^82 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Ed Knapton32E4ECD300B97F430
Verified (Factored)1999-03-26Tim Esau32E4ECD300B97F43376059
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-30alpertronAA7C6AAD722DB4CA1013
Verified2017-10-18Oliver KruseAA7C6AAD722DB4CA1104150013
History
DateUserTypeResult
2017-10-18Oliver KruseC-PRP
M1711687/412788967534221885017 : AA7C6AAD722DB4CA
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M1711687/412788967534221885017 : AA7C6AAD722DB4CA
PRP: Verified
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12
2014-02-22Never Odd Or EvenF
Factor: 412788967534221885017 / TF: 68-69
2014-01-18Never Odd Or EvenNF
no factor from 2^69 to 2^70
2014-01-18Never Odd Or EvenNF
no factor from 2^68 to 2^69
2014-01-18Never Odd Or EvenNF
no factor from 2^67 to 2^68
2014-01-18Never Odd Or EvenNF
no factor from 2^66 to 2^67
2014-01-18Never Odd Or EvenNF
no factor from 2^65 to 2^66
2011-09-30Sebastian HornbostelNF
no factor from 2^64 to 2^65
2011-09-30Sebastian HornbostelNF
no factor from 2^63 to 2^64
2011-02-07Carsten KossendeyNF-PM1
B1=90000, B2=1507500, E=6
2010-10-16GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-22Architects CubedNF
no factor from 2^60 to 2^61