6 994 279 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
20386294763931361519	20	64.1	2012-09-14 07:07:16

ECM

Digits	B1	Curves
25	50000	2 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1999-06-15	Marc Getty / Phil Fizur	E910F2D4733FEA4B	0
Verified (Factored)	2002-03-10	Terry S. Arnold	E910F2D4733FEA4B	3857374

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-01-26	Netanias	049506C2174DCF26	1	6477081	5	3
Verified	2019-02-21	kkmrkkblmbrbk	049506C2174DCF26	1	6836472	5	3

History

Date	User	Type	Result
2023-09-17	Tha	NF-PM1	B1=3500000, B2=11589057480
2019-02-21	kkmrkkblmbrbk	C-PRP	M6994279/20386294763931361519 : 049506C2174DCF26 PRP: Verified PRP without proof (not generated)
2018-01-26	Netanias	C-PRP	M6994279/20386294763931361519 : 049506C2174DCF26 PRP: Verified PRP without proof (not generated)
2012-09-14	ATH	F-ECM	Factor: 20386294763931361519
2012-08-25	Nesowa	NF-PM1	B1=85000, B2=1530000, E=6