354 555 517 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 2⁸¹

Factored

Factor	Digits	Bits	Date
56478721441819340492161	23	75.6	2025-02-28 09:34:05

History

Date	User	Type	Result
2025-02-28	NStorm	F	Factor: 56478721441819340492161 / TF: 75-76
2023-10-06	SRBase	NF	no factor TF: 74-75
2022-04-21	SRBase	NF	no factor TF: 73-74
2021-01-16	SRBase	NF	no factor TF: 72-73
2017-04-15	Jacques MOLNE	NF	no factor TF: 71-72
2017-04-15	Jacques MOLNE	NF	no factor TF: 69-70
2017-04-15	Jacques MOLNE	NF	no factor TF: 70-71
2016-09-30	Jacques MOLNE	NF	no factor TF: 67-69
2016-03-15	rubikvn2100	NF	no factor TF: 66-67
2014-03-08	Mr-Plonk	NF	no factor TF: 65-66
2011-02-04	Architects Cubed	NF	no factor TF: 64-65