318 422 491 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite: 1 known prime factor

Factored

Factor	Digits	Bits	Date
199081777752738274417	21	67.4	2016-12-18 21:18:30

History

Date	User	Type	Result
2025-03-23	James Heinrich	F	Factor: 199081777752738274417 / TF: 67-70
2016-12-18	Sarnetsky	F	Factor: 199081777752738274417 / TF: 67-69*
2016-02-26	Conductor	NF	no factor from 2^66 to 2^67
2014-08-11	tsc	NF	no factor from 2^65 to 2^66
2011-11-03	Richard	NF	no factor from 2^64 to 2^65

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