Marin Mersenne 2^P-1
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Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
11777Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
373660657928.5old
8344098158346874460381412247055932106.02017-03-12 18:41:35
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001289 / 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 Kruse06CAC508D7249F052013
Verified2017-10-02kkmrkkblmbrbk06CAC508D7249F052013
Verified2017-12-07ATH06CAC508D7249F052538213
Verified2020-04-17Oliver Kruse9EF46F8C58C715162605453
Verified2024-07-01kkmrkkblmbrbk9EF46F8C58C715162954853
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M11777/373660657/83440981583468744603814122470559 : 9EF46F8C58C71516
PRP: Verified
PRP without proof (small exponent)
2023-03-26-Anonymous-NF-PM1
B1=100000000000, B2=122192573512709700
2020-04-17Oliver KruseC-PRP
M11777/373660657/83440981583468744603814122470559 : 9EF46F8C58C71516
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M11777/373660657/83440981583468744603814122470559 : 06CAC508D7249F05
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M11777/373660657/83440981583468744603814122470559 : 06CAC508D7249F05
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M11777/373660657/83440981583468744603814122470559 : 06CAC508D7249F05
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M11777/373660657/83440981583468744603814122470559 : 06CAC508D7249F05
PRP without proof (not generated)
2017-03-12kkmrkkblmbrbkF-ECM
Factor: 83440981583468744603814122470559 / (ECM curve 387, B1=1000000, B2=100000000)
2016-09-07kkmrkkblmbrbkNF-PM1
B1=100000000, B2=10000000000, E=12