8 333 261 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶⁸

Factored

Factor	Digits	Bits	Date
266664353	9	28.0	old

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-10-13	trebor	DB565390296BFEFA	1	5145881	5	3
Verified	PRP without proof (not generated)	2020-04-22	Igvan28	DB565390296BFEFA	1	4735905	5	3

History

Date	User	Type	Result
2024-05-10	Stef42	NF-PM1	B1=1025000, B2=1519818300
2020-04-22	Igvan28	C-PRP	M8333261/266664353 : DB565390296BFEFA
2018-10-13	trebor	C-PRP	M8333261/266664353 : DB565390296BFEFA

Username
Password