2 219 807 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 3 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
976715081	9	29.9	old
5951090198064311	16	52.4	2014-08-07 10:47:42
11244407831319703321	20	63.3	2016-04-28 20:32:29

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	185 / 640

Estimated T-Level: 26.4 ⓘ

TF below 2^83 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-10	kkmrkkblmbrbk	E1A5CFDB5A2A3DF5	3	0	1	3
Verified	2017-10-27	Oliver Kruse	E1A5CFDB5A2A3DF5	3	1258146	1	3

P-1 factors

Date	Factor	B1	B2
2016-04-28	11244407831319703321	500000	15000000

History

Date	User	Type	Result
2017-10-27	Oliver Kruse	C-PRP	M2219807/976715081/5951090198064311/11244407831319703321 : E1A5CFDB5A2A3DF5 PRP: Verified PRP without proof (not generated)
2017-10-10	kkmrkkblmbrbk	C-PRP	M2219807/976715081/5951090198064311/11244407831319703321 : E1A5CFDB5A2A3DF5 PRP: Verified PRP without proof (not generated)
2016-04-28	alpertron	F-PM1	Factor: 11244407831319703321 / (P-1, B1=500000, B2=15000000, E=12)
2014-08-07	TJAOI	F	Factor: 5951090198064311