391 311 311 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 2⁷⁶

TF target 2⁸¹

Factored

Factor	Digits	Bits	Date
65970962962016176799719	23	75.8	2025-03-14 19:14:11

History

Date	User	Type	Result
2025-03-14	NStorm	F	Factor: 65970962962016176799719 / TF: 75-76
2023-11-04	SRBase	NF	no factor TF: 74-75
2022-05-18	SRBase	NF	no factor TF: 73-74
2021-01-29	SRBase	NF	no factor TF: 72-73
2019-02-18	Niels_Mache_Nextcloud	NF	no factor TF: 71-72
2019-02-18	Niels_Mache_Nextcloud	NF	no factor TF: 70-71
2017-07-03	mikr	NF	no factor TF: 68-70
2016-07-27	Adam Buran	NF	no factor TF: 67-68
2016-04-11	sasaki	NF	no factor TF: 66-67
2014-05-10	Grant McCracken	NF	no factor TF: 65-66
2010-04-30	Architects Cubed	NF	no factor TF: 64-65