8 316 821 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
353410400688809	15	48.3	old

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-10-07	ATH	C89DF11EB0C11DAB	1	8257597	5	3
Verified	PRP without proof (not generated)	2020-04-19	daveward2005	C89DF11EB0C11DAB	1	2548997	5	3

History

Date	User	Type	Result
2024-06-10	Stef42	NF-PM1	B1=1367000, B2=2598501360
2020-04-19	daveward2005	C-PRP	M8316821/353410400688809 : C89DF11EB0C11DAB
2018-10-07	ATH	C-PRP	M8316821/353410400688809 : C89DF11EB0C11DAB

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