197 495 581 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
8169992521231097143991	22	72.8	2019-05-06 21:00:54

History

Date	User	Type	Result
2019-05-06	manrus	F	Factor: 8169992521231097143991 / TF: 72-73
2019-04-01	manrus	NF	no factor from 2^71 to 2^72
2019-02-11	Niels_Mache_Nextcloud	NF	no factor from 2^70 to 2^71
2018-12-20	Chabot Prime	NF	no factor from 2^69 to 2^70
2017-09-05	rubikvn2100	NF	no factor from 2^68 to 2^69
2016-08-09	XZT	NF	no factor from 2^67 to 2^68
2015-09-18	Nian	NF	no factor from 2^66 to 2^67
2013-07-09	Richard	NF	no factor from 2^65 to 2^66
2011-04-26	Richard	NF	no factor from 2^64 to 2^65
2010-08-08	OS1	NF	no factor from 2^63 to 2^64