9 663 679 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁶⁹

TF target 2⁶⁸

Factored

Factor	Digits	Bits	Date
4440111776979607	16	52.0	old

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2019-10-09	Daniil Tsarkov	1F0768EC585C1E28	1	6454210	5	3
Verified	Certified Good	2020-12-20	storm5510	1F0768EC585C1E28	1	6008682	5	3

History

Date	User	Type	Result
2026-01-06	Mingye Wang	NF-PM1	B1=1700000, B2=3721726470
2025-12-09	Mingye Wang	NF	no factor TF: 68-69
2020-12-20	curtisc	CERT	Proof certified good
2020-12-20	storm5510	C-PRP	M9663679/4440111776979607 : 1F0768EC585C1E28 Proof Certified Good Proof Power: 8
2019-10-09	Daniil Tsarkov	C-PRP	M9663679/4440111776979607 : 1F0768EC585C1E28