2 568 373 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
3205577711566721	16	51.5	old
2453164748040785347924009814842616431	37	120.9	2018-12-31 21:56:24

ECM

Digits	B1	Curves
25	50000	57 / 280

Estimated T-Level: 21.0 ⓘ

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)	2017-10-15	Oliver Kruse	4F1BB30B841C6AC5	1	1965026	5	3
Verified (Factored)	2017-12-01	kkmrkkblmbrbk	4F1BB30B841C6AC5	1	1204926	5	3
Verified	2018-12-31	ATH	4F1BB30B841C6AC5	2	1757249	5	3

P-1 factors

Date	Factor	B1	B2
2018-12-31	2453164748040785347924009814842616431	2000000	60000000

History

Date	User	Type	Result
2018-12-31	ATH	C-PRP	M2568373/3205577711566721/2453164748040785347924009814842616431 : 4F1BB30B841C6AC5 PRP: Verified PRP without proof (not generated)
2018-12-31	alpertron	F-PM1	Factor: 2453164748040785347924009814842616431 / (P-1, B1=2000000, B2=60000000, E=12)
2017-12-01	kkmrkkblmbrbk	C-PRP	M2568373/3205577711566721 : 4F1BB30B841C6AC5 PRP: Verified PRP without proof (not generated)
2017-10-15	Oliver Kruse	C-PRP	M2568373/3205577711566721 : 4F1BB30B841C6AC5 PRP: Verified PRP without proof (not generated)