2 455 471 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
686415308583113	15	49.3	old
2441837731301178857	19	61.1	2016-03-31 11:15:16

ECM

Digits	B1	Curves
25	50000	92 / 280

Estimated T-Level: 21.6 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-13	Oliver Kruse	0505A7A1377DDF38	2	300983	5	3
Verified	2017-11-28	kkmrkkblmbrbk	0505A7A1377DDF38	2	1915642	5	3

History

Date	User	Type	Result
2018-09-28	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-28	kkmrkkblmbrbk	C-PRP	M2455471/686415308583113/2441837731301178857 : 0505A7A1377DDF38 PRP: Verified PRP without proof (not generated)
2017-10-13	Oliver Kruse	C-PRP	M2455471/686415308583113/2441837731301178857 : 0505A7A1377DDF38 PRP: Verified PRP without proof (not generated)
2016-03-31	TJAOI	F	Factor: 2441837731301178857 / TF: 61-62