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

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MnStatusDetails
11629967Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
189920384901431444.1old
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-09-25Chad Steenerson 0E069CE7BB6B1C401804442853
History
DateUserTypeResult
2025-06-10yuriy_5-1NF
no factor from 2^70 to 2^71
2025-05-05yuriy_5-1NF
no factor from 2^69 to 2^70
2025-03-31yuriy_5-1NF
no factor from 2^68 to 2^69
2025-03-11yuriy_5-1NF-PM1
B1=6977976, B2=448598700
2025-02-10yuriy_5-1NF-PM1
B1=4651984, B2=598008840
2024-06-17yuriy_5-1NF-PM1
B1=262144, B2=137022600
2021-09-25Ben DeloCERT
PRP Certification
Proof certified good
2021-09-25Chad Steenerson C-PRP
M11629967/18992038490143 : 0E069CE7BB6B1C40
PRP proof power = 8
PRP: Verified
Proof certified good
2021-08-07ATHNF-PP1
Start=2/7, B1=125000, B2=12500000