8 322 557 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
1253993952124841	16	50.2	old
1606183508295631	16	50.5	2008-09-08 04:30:17
19869702891287129	17	54.1	2014-11-05 12:42:46
161280993017644369	18	57.2	2015-05-28 11:53:21

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-10-11	Luigi Morelli	C3F4368D71490D09	4	7358505	5	3
Verified	PRP without proof (not generated)	2020-04-20	daveward2005	C3F4368D71490D09	4	3622427	5	3

History

Date	User	Type	Result
2024-03-06	Stef42	NF-PM1	B1=3000000, B2=53783100
2022-09-10	LordJulius	NF	no factor TF: 68-69
2022-09-10	LordJulius	NF	no factor TF: 66-67
2022-09-10	LordJulius	NF	no factor TF: 67-68
2022-09-10	LordJulius	NF	no factor TF: 64-65
2022-09-10	LordJulius	NF	no factor TF: 65-66
2020-04-20	daveward2005	C-PRP	M8322557/1253993952124841/1606183508295631/19869702891287129/161280993017644369 : C3F4368D71490D09
2018-10-11	Luigi Morelli	C-PRP	M8322557/1253993952124841/1606183508295631/19869702891287129/161280993017644369 : C3F4368D71490D09
2015-05-28	TJAOI	F	Factor: 161280993017644369
2014-11-05	TJAOI	F	Factor: 19869702891287129
2008-09-08	Will Edgington	F	Factor: 1606183508295631