8 319 431 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
36489024367	11	35.1	old
27999028391639	14	44.7	2008-09-08 04:30:16

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-10-10	Oliver Kruse	D4C7778017210575	2	8158475	5	3
Verified	PRP without proof (not generated)	2020-04-21	GAN	D4C7778017210575	2	729486	5	3

History

Date	User	Type	Result
2024-06-10	Stef42	NF-PM1	B1=1375000, B2=2725257990
2020-04-21	GAN	C-PRP	M8319431/36489024367/27999028391639 : D4C7778017210575
2018-10-10	Oliver Kruse	C-PRP	M8319431/36489024367/27999028391639 : D4C7778017210575
2008-09-08	Will Edgington	F	Factor: 27999028391639

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