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

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MnStatusDetails
8000413Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
2153156750979111547.6old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-07-06_p95holder_66C5F97BC9F9BEC51551651853
Verified2019-06-21timbit66C5F97BC9F9BEC51581594653
History
DateUserTypeResult
2024-02-24Stef42NF-PM1
B1=921000, B2=1681748250
2022-12-14LordJuliusNF
no factor from 2^67 to 2^68
2022-12-14LordJuliusNF
no factor from 2^66 to 2^67
2022-12-14LordJuliusNF
no factor from 2^65 to 2^66
2022-12-14LordJuliusNF
no factor from 2^64 to 2^65
2019-06-21timbitC-PRP
M8000413/215315675097911 : 66C5F97BC9F9BEC5
PRP: Verified
PRP without proof (not generated)
2018-07-06_p95holder_C-PRP
M8000413/215315675097911 : 66C5F97BC9F9BEC5
PRP: Verified
PRP without proof (not generated)