561 008 881 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
47715117571822867710889	23	75.3	2025-03-26 21:10:52

History

Date	User	Type	Result
2025-03-26	NStorm	F	Factor: 47715117571822867710889 / TF: 75-76
2024-01-24	SRBase	NF	no factor TF: 74-75
2022-08-21	SRBase	NF	no factor TF: 73-74
2021-04-02	SRBase	NF	no factor TF: 72-73
2020-09-03	SRBase	NF	no factor TF: 71-72
2018-02-18	mikr	NF	no factor TF: 70-71
2018-02-18	mikr	NF	no factor TF: 68-70
2016-12-10	sasaki	NF	no factor TF: 67-68
2015-10-29	sasaki	NF	no factor TF: 66-67
2014-04-30	sasaki	NF	no factor TF: 65-66
2011-08-19	Architects Cubed	NF	no factor TF: 64-65
2010-03-04	Architects Cubed	NF	no factor TF: 63-64