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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
162787Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
80742353826.3old
132053151872559522385003612683.42014-12-12 13:37:10
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000166 / 1566
Estimated T-Level: 30.5
TF below 2^96 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver Kruse09311D0E37E2BFEA2013
Verified2017-10-11kkmrkkblmbrbk09311D0E37E2BFEA213432713
Verified2020-04-17Oliver Kruse8F234F55B057AFE2214454753
Verified2024-02-03Wentao Huang8F234F55B057AFE224501853
History
DateUserTypeResult
2024-02-03Naegi MakotoCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M162787/80742353/13205315187255952238500361 : 8F234F55B057AFE2
PRP proof power = 5
PRP: Verified
Proof certified good
2020-04-17Oliver KruseC-PRP
M162787/80742353/13205315187255952238500361 : 8F234F55B057AFE2
PRP: Verified
PRP without proof (small exponent)
2017-10-11kkmrkkblmbrbkC-PRP
M162787/80742353/13205315187255952238500361 : 09311D0E37E2BFEA
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M162787/80742353/13205315187255952238500361 : 09311D0E37E2BFEA
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M162787/80742353/13205315187255952238500361 : 09311D0E37E2BFEA
PRP without proof (not generated)
2017-04-23kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2014-12-12TJAOIF-ECM
Factor: 13205315187255952238500361 / (ECM curve 43, B1=50000, B2=5000000)