220 018 979 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
42552130281232899843463	23	75.2	2025-02-02 01:07:13

History

Date	User	Type	Result
2025-02-02	NStorm	F	Factor: 42552130281232899843463 / TF: 75-76
2023-05-27	SRBase	NF	no factor TF: 74-75
2018-09-07	Zenghui	NF	no factor TF: 73-74
2018-08-23	workerthread	NF	no factor TF: 72-73
2018-08-19	workerthread	NF	no factor TF: 71-72
2017-02-20	mikr	NF	no factor TF: 70-71
2017-02-20	mikr	NF	no factor TF: 69-70
2017-02-20	mikr	NF	no factor TF: 68-69
2016-09-02	XZT	NF	no factor TF: 67-68
2015-10-22	rob147147	NF	no factor TF: 66-67
2013-08-19	Lukin Dmitry	NF	no factor TF: 65-66
2011-06-04	tsc	NF	no factor TF: 64-65