8 331 857 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
49991143	8	25.6	old

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-10-12	rucio	FF2B698C0C7C2173	1	6913311	5	3
Verified	PRP without proof (not generated)	2020-04-23	marssystems	FF2B698C0C7C2173	1	4539574	5	3

History

Date	User	Type	Result
2024-05-10	Stef42	NF-PM1	B1=1025000, B2=1519818300
2020-04-23	marssystems	C-PRP	M8331857/49991143 : FF2B698C0C7C2173
2018-10-12	rucio	C-PRP	M8331857/49991143 : FF2B698C0C7C2173

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