2 056 207 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
1065816782053167871	19	59.9	old

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	147 / 640

Estimated T-Level: 26.1 ⓘ

TF below 2^82 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Joel Armengaud	34B1DE3B06835F98	0
Verified (Factored)	1999-02-14	Lloyd A. Murray Jr.	34B1DE3B06835F98	66761

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-06	Oliver Kruse	345F53D7AB508F0F	1	0	1	3
Verified	2017-11-15	kkmrkkblmbrbk	345F53D7AB508F0F	1	1072872	1	3

History

Date	User	Type	Result
2017-11-15	kkmrkkblmbrbk	C-PRP	M2056207/1065816782053167871 : 345F53D7AB508F0F PRP: Verified PRP without proof (not generated)
2017-10-06	Oliver Kruse	C-PRP	M2056207/1065816782053167871 : 345F53D7AB508F0F PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12