1 436 257 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
1241629861852151063	19	60.1	2008-12-16 18:42:15

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	105 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Patrick Ryan	CF2BE8C038D49DED	0
Verified (Factored)		Cornelius Caesar	CF2BE8C038D49DED	0

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-30	Oliver Kruse	5A60EA23DFD3B8F2	1	0	1	3
Verified	2017-10-27	kkmrkkblmbrbk	5A60EA23DFD3B8F2	1	406455	1	3

History

Date	User	Type	Result
2017-10-27	kkmrkkblmbrbk	C-PRP	M1436257/1241629861852151063 : 5A60EA23DFD3B8F2 PRP: Verified PRP without proof (not generated)
2017-09-30	Oliver Kruse	C-PRP	M1436257/1241629861852151063 : 5A60EA23DFD3B8F2 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-12-16	ksims	F-ECM	Factor: 1241629861852151063