857 231 527 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
49816480049234378751959	23	75.4	2026-03-19 08:59:19

History

Date	User	Type	Result
2026-03-19	SRBase	F	Factor: 49816480049234378751959 / TF: 75-76
2024-06-22	SRBase	NF	no factor TF: 74-75
2022-12-11	SRBase	NF	no factor TF: 73-74
2021-06-12	SRBase	NF	no factor TF: 72-73
2020-10-13	SRBase	NF	no factor TF: 71-72
2019-03-17	srow7	NF	no factor TF: 70-71
2016-09-25	ramgeis	NF	no factor TF: 68-70
2015-09-02	sasaki	NF	no factor TF: 67-68
2015-03-06	sasaki	NF	no factor TF: 66-67
2012-04-09	David Campeau	NF	no factor TF: 64-66
2010-08-03	linded	NF	no factor TF: 63-64