10 480 963 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
47553528908383323937	20	65.4	2012-12-07 15:49:13

ECM

Digits	B1	Curves
25	50000	13 / 280

Estimated T-Level: 20.2 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	2001-02-04	Craig Lamb	1E1A389616A6822A	10214707
Verified (Factored)	2004-01-07	Ars Technica Team Prime Rib	1E1A389616A6822A	2746228

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-08-10	riccardo uberti	874AF2259B635E53	1	3152993	5	3
Verified	2021-03-09	ViliamF	874AF2259B635E53	1	3964868	5	3

P-1 factors

Date	Factor	B1	B2
2012-12-07	47553528908383323937	145000	2875000

History

Date	User	Type	Result
2021-03-09	kutens	CERT	PRP Certification Proof certified good
2021-03-09	ViliamF	C-PRP	M10480963/47553528908383323937 : 874AF2259B635E53 PRP proof power = 8 PRP: Verified Proof certified good
2020-08-10	riccardo uberti	C-PRP	M10480963/47553528908383323937 : 874AF2259B635E53 PRP: Verified PRP without proof (not generated)
2012-12-07	Nesowa	F	Factor: 47553528908383323937