185 117 983 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
12972474299340909439351	23	73.5	2020-02-06 04:42:04

History

Date	User	Type	Result
2025-04-22	Chuck	F	Factor: 12972474299340909439351 / TF: 73-74
2020-02-06	Smok_bmv	F	Factor: 12972474299340909439351 / TF: 73-74*
2019-05-31	Hans Loeblich	NF	no factor from 2^72 to 2^73
2018-12-06	Zenghui	NF	no factor from 2^71 to 2^72
2018-05-26	Zenghui	NF	no factor from 2^70 to 2^71
2016-07-22	Andrew B	NF	no factor from 2^69 to 2^70
2016-07-19	Andrew B	NF	no factor from 2^68 to 2^69
2016-07-17	Andrew B	NF	no factor from 2^67 to 2^68
2015-08-16	Richard	NF	no factor from 2^66 to 2^67
2013-05-21	OS1	NF	no factor from 2^65 to 2^66
2011-03-31	OS1	NF	no factor from 2^64 to 2^65
2010-07-28	garo	NF	no factor from 2^63 to 2^64