8 321 309 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
66570473	8	26.0	old
316209743	9	28.2	2008-09-08 04:30:16

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-10-10	Oliver Kruse	226BF0D4603E7C5B	2	4211048	5	3
Verified	PRP without proof (not generated)	2020-04-18	Igvan28	226BF0D4603E7C5B	2	3404300	5	3

History

Date	User	Type	Result
2024-06-10	Stef42	NF-PM1	B1=1375000, B2=2725257990
2020-04-18	Igvan28	C-PRP	M8321309/66570473/316209743 : 226BF0D4603E7C5B
2018-10-10	Oliver Kruse	C-PRP	M8321309/66570473/316209743 : 226BF0D4603E7C5B
2008-09-08	Will Edgington	F	Factor: 316209743

Username
Password