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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
12757Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
76543516.2old
1837009720.82008-08-26 19:58:38
52738952773068791652.22008-08-29 02:24:31
1579975669591789833353532858713097.02017-04-14 21:30:00
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001266 / 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 KruseC02265E9FE63AE494013
Verified2017-10-02kkmrkkblmbrbkC02265E9FE63AE494013
Verified2017-12-07ATHC02265E9FE63AE494908613
Verified2020-04-17Oliver KruseC4380FCC8C6ABC584926053
Verified2024-07-01kkmrkkblmbrbkC4380FCC8C6ABC584357253
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M12757/157997566959178983335353285871/1837009/5273895277306879/76543 : C4380FCC8C6ABC58
PRP: Verified
PRP without proof (small exponent)
2023-05-24-Anonymous-NF-PM1
B1=100000000000, B2=120417199046794650
2023-05-14JacobZNF-PM1
B1=8700000000, B2=36024966470342850
2022-02-05JossNF-PM1
B1=1000000, B2=3910366209750
2020-04-17Oliver KruseC-PRP
M12757/76543/1837009/5273895277306879/157997566959178983335353285871 : C4380FCC8C6ABC58
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M12757/76543/1837009/5273895277306879/157997566959178983335353285871 : C02265E9FE63AE49
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M12757/76543/1837009/5273895277306879/157997566959178983335353285871 : C02265E9FE63AE49
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M12757/known_factors : C02265E9FE63AE49
PRP without proof (not generated)
2017-04-14kkmrkkblmbrbkF-ECM
Factor: 157997566959178983335353285871 / (ECM curve 168, B1=1000000, B2=100000000)
2008-08-29-Anonymous-F
Factor: 5273895277306879
2008-08-26-Anonymous-F
Factor: 1837009