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
13220749Factored
FactorDigitsBitsDate
2372540594162943104332167.7old
638279710405556424652732375.82008-07-15 22:26:55
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-06-20PoaoD388FED00922BCEB2400629053
History
DateUserTypeResult
2022-06-20curtiscCERT
PRP Certification
Proof certified good
2022-06-20PoaoC-PRP
M13220749/237254059416294310433/63827971040555642465273 : D388FED00922BCEB
PRP proof power = 8
PRP: Verified
Proof certified good
2022-06-18nordiNF-PM1
B1=300000, B2=210129150
2022-06-11nordiNF-PM1
B1=300000
2022-04-10LordJuliusNF
no factor from 2^66 to 2^67
2022-04-10LordJuliusNF
no factor from 2^65 to 2^66
2022-04-10LordJuliusNF
no factor from 2^64 to 2^65
2008-07-15George WoltmanF-ECM
Factor: 15143445233677500980904390450355115684093209