2 425 613 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
72768391	8	26.1	old
656848796514328650895373272859786806313	39	128.9	2018-07-18 21:42:53

ECM

Digits	B1	Curves
25	50000	67 / 280

Estimated T-Level: 21.2 ⓘ

TF below 2^65 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-13	Oliver Kruse	5381165958F0F39D	1	1702915	5	3
Verified (Factored)	2017-11-27	kkmrkkblmbrbk	5381165958F0F39D	1	1120698	5	3
Verified	2018-07-19	Gabriel Lignelli	5381165958F0F39D	2	1651209	5	3

P-1 factors

Date	Factor	B1	B2
2018-07-18	656848796514328650895373272859786806313	2000000	60000000

History

Date	User	Type	Result
2018-07-19	Gabriel Lignelli	C-PRP	M2425613/72768391/656848796514328650895373272859786806313 : 5381165958F0F39D PRP: Verified PRP without proof (not generated)
2018-07-18	alpertron	F-PM1	Factor: 656848796514328650895373272859786806313 / (P-1, B1=2000000, B2=60000000, E=12)
2017-11-27	kkmrkkblmbrbk	C-PRP	M2425613/72768391 : 5381165958F0F39D PRP: Verified PRP without proof (not generated)
2017-10-13	Oliver Kruse	C-PRP	M2425613/72768391 : 5381165958F0F39D PRP: Verified PRP without proof (not generated)