821 173 337 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 2⁸⁴

Factored

Factor	Digits	Bits	Date
40688082940872088728887	23	75.1	2025-03-02 17:53:57

History

Date	User	Type	Result
2025-03-02	NStorm	F	Factor: 40688082940872088728887 / TF: 75-76
2024-01-18	MooMoo2	NF	no factor TF: 74-75
2022-11-27	SRBase	NF	no factor TF: 73-74
2021-06-02	SRBase	NF	no factor TF: 72-73
2020-10-10	SRBase	NF	no factor TF: 71-72
2019-12-12	ATH	NF	no factor TF: 70-71
2016-12-09	ramgeis	NF	no factor TF: 68-70
2015-07-07	sasaki	NF	no factor TF: 67-68
2014-12-30	sasaki	NF	no factor TF: 66-67
2013-10-12	america64	NF	no factor TF: 65-66
2010-10-09	Architects Cubed	NF	no factor TF: 64-65
2010-03-30	Architects Cubed	NF	no factor TF: 63-64