561 073 853 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
26269027528653734940263	23	74.5	2024-01-24 16:13:59

History

Date	User	Type	Result
2025-06-13	Greg	F	Factor: 26269027528653734940263 / TF: 74-75
2024-01-24	SRBase	F	Factor: 26269027528653734940263 / TF: 74-75*
2022-09-05	SRBase	NF	no factor from 2^73 to 2^74
2021-04-03	SRBase	NF	no factor from 2^72 to 2^73
2020-09-03	SRBase	NF	no factor from 2^71 to 2^72
2019-12-23	sasaki	NF	no factor from 2^70 to 2^71
2018-11-07	Niels_Mache_Nextcloud	NF	no factor from 2^69 to 2^70
2018-04-17	sasaki	NF	no factor from 2^68 to 2^69
2016-12-10	sasaki	NF	no factor from 2^67 to 2^68
2015-10-29	sasaki	NF	no factor from 2^66 to 2^67
2014-04-30	sasaki	NF	no factor from 2^65 to 2^66
2011-08-25	Architects Cubed	NF	no factor from 2^64 to 2^65
2010-03-04	Architects Cubed	NF	no factor from 2^63 to 2^64