858 400 001 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 2⁸⁵

Factored

Factor	Digits	Bits	Date
74926431090705405817591	23	76.0	2025-02-24 22:54:01

History

Date	User	Type	Result
2025-02-24	NStorm	F	Factor: 74926431090705405817591 / TF: 75-76
2024-06-20	SRBase	NF	no factor TF: 74-75
2022-12-11	SRBase	NF	no factor TF: 73-74
2021-06-14	SRBase	NF	no factor TF: 72-73
2019-05-11	abc	NF	no factor TF: 71-72
2019-03-25	srow7	NF	no factor TF: 70-71
2016-10-27	ramgeis	NF	no factor TF: 68-70
2015-09-11	sasaki	NF	no factor TF: 67-68
2015-03-02	sasaki	NF	no factor TF: 66-67
2013-08-27	Le Comte	NF	no factor TF: 65-66
2010-10-27	Architects Cubed	NF	no factor TF: 64-65
2010-04-03	Architects Cubed	NF	no factor TF: 63-64