2 017 079 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
417935460729927631	18	58.5	old

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	214 / 640

Estimated T-Level: 26.7 ⓘ

TF below 2^84 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Roger Gariépy	00D99C6176E5CFFD	0
Verified (Factored)	1999-01-10	Nick Willis	00D99C6176E5CFFD	1788146

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-05	Oliver Kruse	BB4B7129B67A34FB	1	0	1	3
Verified	2017-11-14	kkmrkkblmbrbk	BB4B7129B67A34FB	1	259476	1	3

History

Date	User	Type	Result
2017-11-14	kkmrkkblmbrbk	C-PRP	M2017079/417935460729927631 : BB4B7129B67A34FB PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M2017079/417935460729927631 : BB4B7129B67A34FB PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12