531 111 397 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
49735628295664494860857	23	75.4	2025-03-22 05:11:03

History

Date	User	Type	Result
2025-03-22	NStorm	F	Factor: 49735628295664494860857 / TF: 75-76
2024-01-13	SRBase	NF	no factor TF: 74-75
2022-08-03	SRBase	NF	no factor TF: 73-74
2021-03-22	SRBase	NF	no factor TF: 72-73
2020-08-29	SRBase	NF	no factor TF: 71-72
2019-07-30	sasaki	NF	no factor TF: 70-71
2019-01-16	ATH	NF	no factor TF: 69-70
2017-07-19	sasaki	NF	no factor TF: 68-69
2016-09-23	sasaki	NF	no factor TF: 67-68
2016-02-20	sasaki	NF	no factor TF: 66-67
2011-09-28	Rob_Dee	NF	no factor TF: 65-66
2010-11-23	Rob_Dee	NF	no factor TF: 64-65
2010-07-09	Architects Cubed	NF	no factor TF: 63-64