621 666 611 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 2⁸³

Factored

Factor	Digits	Bits	Date
43889966353312269537719	23	75.2	2025-03-10 13:28:32

History

Date	User	Type	Result
2025-03-10	NStorm	F	Factor: 43889966353312269537719 / TF: 75-76
2024-02-16	SRBase	NF	no factor TF: 74-75
2022-09-19	SRBase	NF	no factor TF: 73-74
2021-01-07	sasaki	NF	no factor TF: 72-73
2020-09-16	SRBase	NF	no factor TF: 71-72
2018-12-09	Niels_Mache_Nextcloud	NF	no factor TF: 70-71
2018-10-03	Niels_Mache_Nextcloud	NF	no factor TF: 69-70
2017-03-12	sasaki	NF	no factor TF: 68-69
2017-01-07	sasaki	NF	no factor TF: 67-68
2014-03-24	sasaki	NF	no factor TF: 65-67