2 636 617 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
22079412872355343	17	54.3	old
49355957583707249112739667161	29	95.3	2019-03-27 10:51:41

ECM

Digits	B1	Curves
25	50000	180 / 280

Estimated T-Level: 23.2 ⓘ

TF below 2^72 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-18	Oliver Kruse	D84698792154F58D	1	520050	5	3
Verified (Factored)	2017-12-03	kkmrkkblmbrbk	D84698792154F58D	1	1702945	5	3
Verified	2019-03-27	ATH	D84698792154F58D	2	1126462	5	3

P-1 factors

Date	Factor	B1	B2
2019-03-27	49355957583707249112739667161	2000000	60000000

History

Date	User	Type	Result
2019-03-27	ATH	C-PRP	M2636617/22079412872355343/49355957583707249112739667161 : D84698792154F58D PRP: Verified PRP without proof (not generated)
2019-03-27	alpertron	F-PM1	Factor: 49355957583707249112739667161 / (P-1, B1=2000000, B2=60000000, E=12)
2017-12-03	kkmrkkblmbrbk	C-PRP	M2636617/22079412872355343 : D84698792154F58D PRP: Verified PRP without proof (not generated)
2017-10-18	Oliver Kruse	C-PRP	M2636617/22079412872355343 : D84698792154F58D PRP: Verified PRP without proof (not generated)