8 305 543 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
662865386831	12	39.3	old

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-10-03	ATH	4C40DB107F22B55A	1	4620618	5	3
Verified	PRP without proof (not generated)	2020-04-21	Nesowa	4C40DB107F22B55A	1	5810397	5	3

History

Date	User	Type	Result
2024-04-09	Stef42	NF-PM1	B1=3000000, B2=6211055760
2020-04-21	Nesowa	C-PRP	M8305543/662865386831 : 4C40DB107F22B55A
2018-10-03	ATH	C-PRP	M8305543/662865386831 : 4C40DB107F22B55A

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