7 882 097 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
2212306325989219367	19	60.9	old
28878914772989235466818937	26	84.6	2024-02-02 18:02:52

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2018-05-31	_p95holder_	DC49103F2B5811F4	1	6379164	5	3
Verified (Factored)	2019-11-06	arnaud	DC49103F2B5811F4	1	5393786	5	3
Verified	2024-02-08	Perig	DC49103F2B5811F4	2	5591737	5	3

P-1 factors

Date	Factor	B1	B2
2024-02-02	28878914772989235466818937	950000	1968826860

History

Date	User	Type	Result
2024-02-08	Cosmos95	CERT	PRP Certification Proof certified good
2024-02-08	Perig	C-PRP	M7882097/2212306325989219367/28878914772989235466818937 : DC49103F2B5811F4 PRP proof power = 8 PRP: Verified Proof certified good
2024-02-02	Stef42	F-PM1	Factor: 28878914772989235466818937 / (P-1, B1=950000, B2=1968826860)
2019-11-06	arnaud	C-PRP	M7882097/2212306325989219367 : DC49103F2B5811F4 PRP: Verified (Factored) PRP without proof (not generated)
2018-05-31	_p95holder_	C-PRP	M7882097/2212306325989219367 : DC49103F2B5811F4 PRP: Verified (Factored) PRP without proof (not generated)