158 267 281 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
68841152936685914530777	23	75.9	2024-08-26 10:42:25

History

Date	User	Type	Result
2025-06-05	Greg	F	Factor: 68841152936685914530777 / TF: 75-76
2024-08-26	SRBase	F	Factor: 68841152936685914530777 / TF: 75-76*
2024-06-01	James Heinrich	NF	no factor from 2^71 to 2^72
2023-02-26	SRBase	NF	no factor from 2^74 to 2^75
2021-11-20	SRBase	NF	no factor from 2^73 to 2^74
2016-10-14	arnaud	NF	no factor from 2^72 to 2^73
2016-10-14	Conductor	NF	no factor from 2^71 to 2^72
2016-08-23	neocpp	NF	no factor from 2^70 to 2^71
2016-08-11	neocpp	NF	no factor from 2^69 to 2^70
2016-07-27	Adam Buran	NF	no factor from 2^68 to 2^69
2016-05-13	RDbrvn	NF	no factor from 2^67 to 2^68
2015-04-30	Richard	NF	no factor from 2^66 to 2^67
2013-02-14	Charles A. Morris	NF	no factor from 2^65 to 2^66
2011-01-29	oodaira	NF	no factor from 2^64 to 2^65
2010-06-27	Charles A. Morris	NF	no factor from 2^63 to 2^64