9 625 663 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
96256631	8	26.5	old

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2019-10-05	mnd9	9EF76781580D3A9F	1	711446	5	3
Verified	Certified Good	2020-12-16	storm5510	9EF76781580D3A9F	1	7446606	5	3

History

Date	User	Type	Result
2025-12-23	Mingye Wang	NF-PM1	B1=1700000, B2=4870535670
2025-12-04	Mingye Wang	NF	no factor TF: 68-69
2020-12-16	Franklin Webber	CERT	Proof certified good
2020-12-16	storm5510	C-PRP	M9625663/96256631 : 9EF76781580D3A9F Proof Certified Good Proof Power: 8
2019-10-05	mnd9	C-PRP	M9625663/96256631 : 9EF76781580D3A9F

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