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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Exponent Range:










MnStatusDetails
3258569Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
45619967825.4old
ECM
DigitsB1Curves
25500009 / 280
Estimated T-Level: 20.2 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-11-02Oliver Kruse79AFA11738843F59158069453
Verified2017-12-13kkmrkkblmbrbk79AFA11738843F591161384553
History
DateUserTypeResult
2022-04-18LordJuliusNF
no factor from 2^66 to 2^67
2022-04-18LordJuliusNF
no factor from 2^65 to 2^66
2022-04-18LordJuliusNF
no factor from 2^64 to 2^65
2022-04-18LordJuliusNF
no factor from 2^63 to 2^64
2022-04-18LordJuliusNF
no factor from 2^62 to 2^63
2022-01-08JossNF-PM1
B1=1000000, B2=116447100
2021-03-29JossNF
no factor from 2^67 to 2^68
2021-01-18JossNF
no factor from 2^65 to 2^66
2021-01-04JossNF-PM1
B1=325856, B2=3258569, E=6
2017-12-13kkmrkkblmbrbkC-PRP
M3258569/45619967 : 79AFA11738843F59
PRP: Verified
PRP without proof (not generated)
2017-11-02Oliver KruseC-PRP
M3258569/45619967 : 79AFA11738843F59
PRP: Verified
PRP without proof (not generated)