8 331 997 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
7248837391	10	32.8	old
1617790529503	13	40.6	2008-09-08 04:30:33

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-10-15	Oliver Kruse	404D51E059F5905A	2	7382666	5	3
Verified	PRP without proof (not generated)	2020-05-02	oodaira	404D51E059F5905A	2	961926	5	3

History

Date	User	Type	Result
2024-05-10	Stef42	NF-PM1	B1=1025000, B2=1519818300
2020-05-02	oodaira	C-PRP	M8331997/7248837391/1617790529503 : 404D51E059F5905A
2018-10-15	Oliver Kruse	C-PRP	M8331997/7248837391/1617790529503 : 404D51E059F5905A
2008-09-08	Will Edgington	F	Factor: 1617790529503

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