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

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MnStatusDetails
16185803Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
1381712406771389809912166.92014-08-08 09:54:29
6796394485837337379012312479.22023-12-07 01:37:27
LL
StatusDateUserResidueShift
Verified (Factored)2003-04-03EDNYC9EEA76CADE186E913772387
Verified (Factored)2006-02-01Kenneth D. HittelC9EEA76CADE186E9633225
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2024-04-01Perig5E99DE8F661E2AC521444609653
Verified2025-08-28-Anonymous-5E99DE8F661E2AC521283295853
P-1 factors
DateFactorB1B2
2023-12-07679639448583733737901231500000265291950
History
DateUserTypeResult
2025-08-28jericksonCERT
PRP Certification
Proof certified good
2025-08-28-Anonymous-C-PRP
M16185803/138171240677138980991/679639448583733737901231 : 5E99DE8F661E2AC5
PRP proof power = 8
PRP: Verified
Proof certified good
2024-04-02ANONYMOUSCERT
PRP Certification
Proof certified good
2024-04-01PerigC-PRP
M16185803/138171240677138980991/679639448583733737901231 : 5E99DE8F661E2AC5
PRP proof power = 8
PRP: Verified
Proof certified good
2023-12-07nordiF-PM1
Factor: 679639448583733737901231 / (P-1, B1=500000, B2=265291950)
2023-11-27nordiNF-PM1
B1=500000
2023-10-30nordiNF-PM1
B1=400000
2014-08-08NesowaF
Factor: 138171240677138980991 / TF: 66-67
2014-02-19NesowaNF
no factor from 2^65 to 2^66