8 321 983 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

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

Trial Factored to 2⁶⁸

TF target 2⁶⁸

Factored

Factor	Digits	Bits	Date
641458449641	12	39.2	old
4224920973407	13	41.9	2008-09-08 04:30:17

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-10-12	Oliver Kruse	32D1EEFD8BEECB3C	2	4651897	5	3
Verified	PRP without proof (not generated)	2020-04-19	oodaira	32D1EEFD8BEECB3C	2	587653	5	3

History

Date	User	Type	Result
2024-06-10	Stef42	NF-PM1	B1=1375000, B2=2788626750
2020-04-19	oodaira	C-PRP	M8321983/641458449641/4224920973407 : 32D1EEFD8BEECB3C
2018-10-12	Oliver Kruse	C-PRP	M8321983/641458449641/4224920973407 : 32D1EEFD8BEECB3C
2008-09-08	Will Edgington	F	Factor: 4224920973407

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