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

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MnStatusDetails
18305527Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
11966322999911340.1old
416121468583087511755.22015-01-12 12:28:08
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2025-09-27Jason LynchF93BF946D591A87421290564153
History
DateUserTypeResult
2025-09-27riccardo ubertiCERT
PRP Certification
Proof certified good
2025-09-27Jason LynchC-PRP
M18305527/1196632299991/41612146858308751 : F93BF946D591A874
PRP proof power = 8
PRP: Verified
Proof certified good
2025-09-11nordiNF-PM1
B1=1000000, B2=418592790
2022-06-24LordJuliusNF
no factor from 2^66 to 2^67
2022-06-24LordJuliusNF
no factor from 2^65 to 2^66
2022-04-11LordJuliusNF
no factor from 2^67 to 2^68
2015-01-12TJAOIF
Factor: 41612146858308751 / TF: 55-56