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

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MnStatusDetails
2830469Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
905750081929.8old
ECM
DigitsB1Curves
255000058 / 280
Estimated T-Level: 21.0
TF below 2^65 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-22Oliver KruseFE90A7D9A515FA301265157853
Verified2017-12-07kkmrkkblmbrbkFE90A7D9A515FA301236200353
History
DateUserTypeResult
2024-06-20yuriy_5-1NF-PM1
B1=1420000, B2=5727591870
2024-06-03USAFSSNF-PM1
B1=420000, B2=261482760
2023-01-30USAFSSNF-PM1
B1=360000, B2=287380170
2023-01-28Lisander ViaeneNF-PM1
B1=72000, B2=281496600
2017-12-07kkmrkkblmbrbkC-PRP
M2830469/905750081 : FE90A7D9A515FA30
PRP: Verified
PRP without proof (not generated)
2017-10-22Oliver KruseC-PRP
M2830469/905750081 : FE90A7D9A515FA30
PRP: Verified
PRP without proof (not generated)