8 331 263 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
588508052742867407	18	59.0	old

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-10-15	Oliver Kruse	D7F85448B60EFFAA	1	3871515	5	3
Verified	PRP without proof (not generated)	2020-04-23	daveward2005	D7F85448B60EFFAA	1	1223629	5	3

History

Date	User	Type	Result
2024-05-10	Stef42	NF-PM1	B1=1025000, B2=1519818300
2020-04-23	daveward2005	C-PRP	M8331263/588508052742867407 : D7F85448B60EFFAA
2018-10-15	Oliver Kruse	C-PRP	M8331263/588508052742867407 : D7F85448B60EFFAA
1998-09-13	-anonymous-	F	Factor: 588508052742867407

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