90 086 989 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite: 1 known prime factor

Trial Factored to 2⁷⁵

TF target 2⁷⁵

Factored

Factor	Digits	Bits	Date
19616785394967460455521	23	74.1	2018-11-22 20:39:44

History

Date	User	Type	Result
2025-06-03	Greg	F	Factor: 19616785394967460455521 / TF: 74-75
2024-05-21	James Heinrich	NF	no factor TF: 68-69
2018-11-22	One Man	F	Factor: 19616785394967460455521 / TF: 74-75*
2018-03-04	c10ck3r	NF-PM1	B1=10000
2017-11-21	Carsten Kossendey	NF	no factor TF: 73-74
2016-07-23	Carsten Kossendey	NF	no factor TF: 72-73
2015-01-01	Carsten Kossendey	NF	no factor TF: 71-72
2014-03-11	Mark Yellow	NF	no factor TF: 70-71
2013-11-15	Carsten Kossendey	NF	no factor TF: 69-70
2012-07-18	Carsten Kossendey	NF	no factor TF: 68-69
2009-11-05	Carsten Kossendey	NF	no factor TF: 67-68
2009-04-11	Carsten Kossendey	NF	no factor TF: 66-67