251 899 997 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 2⁷⁹

Factored

Factor	Digits	Bits	Date
39357563684233176860879	23	75.1	2025-01-25 01:25:43

History

Date	User	Type	Result
2025-01-25	NStorm	NF	no factor TF: 74-75
2025-01-25	NStorm	NF	no factor TF: 70-74
2025-01-25	NStorm	NF	no factor TF: 65-70
2025-01-25	NStorm	NF	no factor TF: 1-65
2025-01-25	NStorm	F	Factor: 39357563684233176860879 / TF: 75-76
2023-07-16	SRBase	NF	no factor TF: 74-75
2022-02-08	SRBase	NF	no factor TF: 73-74
2020-11-21	SRBase	NF	no factor TF: 72-73
2020-06-30	SRBase	NF	no factor TF: 71-72
2020-05-01	SRBase	NF	no factor TF: 70-71
2019-04-07	ANONYMOUS	NF	no factor TF: 69-70
2018-06-03	Niels_Mache_Nextcloud	NF	no factor TF: 68-69
2014-11-15	caddr	NF	no factor TF: 67-68
2014-10-20	caddr	NF	no factor TF: 66-67
2013-11-18	Yan Ruimin China	NF	no factor TF: 65-66
2011-07-28	carlos56	NF	no factor TF: 64-65
2010-03-05	Richard	NF	no factor TF: 63-64
2010-03-05	Richard	NF	no factor TF: 62-63