7 871 113 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
9381872780855132116479649	25	83.0	2012-10-07 14:25:47

Status	Date	User	Residue	Shift
Verified (Factored)	1999-12-01	EDNY	5BF07FCDFB86E6AA	4395004
Verified (Factored)	2002-06-02	Dennis Pope	5BF07FCDFB86E6AA	6354507

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-05-30	Oliver Kruse	68206B14A17C2EE6	1	5642453	5	3
Verified	2019-10-30	marssystems	68206B14A17C2EE6	1	6715412	5	3

P-1 factors

Date	Factor	B1	B2
2012-10-07	9381872780855132116479649	100000	1900000

History

Date	User	Type	Result
2025-01-01	Stef42	NF-PM1	B1=1125000, B2=1793869350
2019-10-30	marssystems	C-PRP	M7871113/9381872780855132116479649 : 68206B14A17C2EE6 PRP: Verified PRP without proof (not generated)
2018-05-30	Oliver Kruse	C-PRP	M7871113/9381872780855132116479649 : 68206B14A17C2EE6 PRP: Verified PRP without proof (not generated)
2012-10-07	Nesowa	F-PM1	Factor: 9381872780855132116479649