8 322 257 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
249667711	9	27.9	old
1277850633428461511	19	60.1	2016-01-15 13:18:36

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-11-09	rucio	4A585ABC1BAA4A57	2	4048507	5	3
Verified	PRP without proof (not generated)	2020-05-09	Luigi Morelli	4A585ABC1BAA4A57	2	5287493	5	3

History

Date	User	Type	Result
2024-06-10	Stef42	NF-PM1	B1=1375000, B2=2725257990
2020-05-09	Luigi Morelli	C-PRP	M8322257/249667711/1277850633428461511 : 4A585ABC1BAA4A57
2018-11-09	rucio	C-PRP	M8322257/249667711/1277850633428461511 : 4A585ABC1BAA4A57
2016-01-15	TJAOI	F	Factor: 1277850633428461511

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