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

PrimeNet Exponent Status

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MnStatusDetails
12163Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
120156087671133.5old
1467383181064087576072167.02008-08-29 02:24:29
46826001602488912049715105228479587672616942138.42014-12-25 21:43:51
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001282 / 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
Verified2017-09-21Oliver Kruse37668C97721998A33013
Verified2017-10-02kkmrkkblmbrbk37668C97721998A33013
Verified2017-12-07ATH37668C97721998A331064113
Verified2020-04-17Oliver Kruse3A1D2EEF3AE8F5FB3601153
Verified2023-05-19-Anonymous-3A1D2EEF3AE8F5FB31051653
History
DateUserTypeResult
2023-05-19-Anonymous-C-PRP
M12163/12015608767/146738318106408757607/468260016024889120497151052284795876726169 : 3A1D2EEF3AE8F5FB
PRP: Verified
PRP without proof (small exponent)
2023-04-06-Anonymous-NF-PM1
B1=100000000000, B2=124652215247990430
2020-04-17Oliver KruseC-PRP
M12163/12015608767/146738318106408757607/468260016024889120497151052284795876726169 : 3A1D2EEF3AE8F5FB
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M12163/12015608767/146738318106408757607/468260016024889120497151052284795876726169 : 37668C97721998A3
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M12163/12015608767/146738318106408757607/468260016024889120497151052284795876726169 : 37668C97721998A3
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M12163/12015608767/146738318106408757607/468260016024889120497151052284795876726169 : 37668C97721998A3
PRP without proof (not generated)
2016-09-08kkmrkkblmbrbkNF-PM1
B1=100000000, B2=10000000000, E=12
2014-12-25BloodIceF-ECM
Factor: 468260016024889120497151052284795876726169 / (ECM curve 1099, B1=1000000, B2=100000000)
2008-08-29-Anonymous-F-ECM
Factor: 146738318106408757607