7 931 881 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
174168242999	12	37.3	old
12307154150887	14	43.5	2008-09-30 23:49:28

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-06-18	_p95holder_	7B0DC3E5C93D2DB5	2	4708322	5	3
Verified	2019-11-24	marssystems	7B0DC3E5C93D2DB5	2	1728389	5	3

History

Date	User	Type	Result
2024-02-05	Stef42	NF-PM1	B1=950000, B2=1968826860
2019-11-24	marssystems	C-PRP	M7931881/174168242999/12307154150887 : 7B0DC3E5C93D2DB5 PRP: Verified PRP without proof (not generated)
2018-06-18	_p95holder_	C-PRP	M7931881/174168242999/12307154150887 : 7B0DC3E5C93D2DB5 PRP: Verified PRP without proof (not generated)
2008-09-30	markr	F	Factor: 12307154150887