858 722 191 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
18955588727417547559577	23	74.0	2024-06-20 08:17:34

History

Date	User	Type	Result
2025-05-16	Greg	F	Factor: 18955588727417547559577 / TF: 74-75
2024-06-20	SRBase	F	Factor: 18955588727417547559577 / TF: 74-75*
2022-12-11	SRBase	NF	no factor from 2^73 to 2^74
2021-01-03	lycorn	NF	no factor from 2^72 to 2^73
2020-10-13	SRBase	NF	no factor from 2^71 to 2^72
2019-03-27	srow7	NF	no factor from 2^70 to 2^71
2016-11-18	ramgeis	NF	no factor from 2^68 to 2^70
2015-09-08	sasaki	NF	no factor from 2^67 to 2^68
2015-03-04	sasaki	NF	no factor from 2^66 to 2^67
2012-04-10	David Campeau	NF	no factor from 2^64 to 2^66
2010-08-02	linded	NF	no factor from 2^63 to 2^64