977 922 221 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 2⁷⁸

TF target 2⁸⁵

Factored

Factor	Digits	Bits	Date
209438175029045237548199	24	77.5	2025-02-28 12:45:12

History

Date	User	Type	Result
2025-02-28	NStorm	F	Factor: 209438175029045237548199 / TF: 77-78
2020-07-20	E.Lechner	NF	no factor TF: 76-77
2019-01-22	E.Lechner	NF	no factor TF: 75-76
2018-08-01	E.Lechner	NF	no factor TF: 74-75
2018-04-22	E.Lechner	NF	no factor TF: 73-74
2017-08-06	E.Lechner	NF	no factor TF: 72-73
2017-03-29	E.Lechner	NF	no factor TF: 71-72
2017-01-06	E.Lechner	NF	no factor TF: 70-71
2015-04-29	ramgeis	NF	no factor TF: 68-70
2015-02-16	lycorn	NF	no factor TF: 66-68
2012-04-20	linded	NF	no factor TF: 65-66
2010-09-13	HBendtz	NF	no factor TF: 64-65