9 658 357 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 4 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁹

TF target 2⁶⁸

Factored

Factor	Digits	Bits	Date
57950143	8	25.8	old
9329972863	10	33.1	2008-09-08 05:34:17
751651975169	12	39.5	2008-09-30 23:57:56
9844830261147439	16	53.1	2014-09-05 11:17:31

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2019-10-09	mnd9	B55FD4DAE9906FE0	4	1750590	5	3
Verified	Certified Good	2020-12-19	storm5510	B55FD4DAE9906FE0	4	9457310	5	3

History

Date	User	Type	Result
2025-12-08	Mingye Wang	NF	no factor TF: 68-69
2025-06-12	yuriy_5-1	NF-PM1	B1=2897506, B2=612757530
2020-12-19	Ben Delo	CERT	Proof certified good
2020-12-19	storm5510	C-PRP	Proof Certified Good Proof Power: 8
2019-10-09	mnd9	C-PRP	M9658357/57950143/9329972863/751651975169/9844830261147439 : B55FD4DAE9906FE0
2014-09-05	TJAOI	F	Factor: 9844830261147439
2008-09-30	markr	F	Factor: 751651975169
2008-09-08	Will Edgington	F	Factor: 9329972863