3 391 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
298409	6	18.2	old
1519169	7	20.5	old

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	9201 / 9201
50	44000000	16550 / 16550
55	110000000	14646 / 40830

Estimated T-Level: 51.8 ⓘ

TF below 2^167 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-21	Oliver Kruse	B4D5D6010B17C3C9	2	0	1	3
Verified	2017-10-12	kkmrkkblmbrbk	B4D5D6010B17C3C9	2	884	1	3
Verified	2020-04-17	Oliver Kruse	6664F4C775C8D1BB	2	1940	5	3
Verified	2024-02-03	Wentao Huang	6664F4C775C8D1BB	2	2186	5	3

History

Date	User	Type	Result
2024-02-03	Wentao Huang	C-PRP	M3391/298409/1519169 : 6664F4C775C8D1BB PRP: Verified PRP without proof (small exponent)
2022-04-30	mikr	NF-PM1	B1=100000000000, B2=524347264460139120
2021-09-05	Jinyuan Wang	NF-PM1	B1=1300000000, B2=1300000000000, E=12
2020-04-17	Oliver Kruse	C-PRP	M3391/298409/1519169 : 6664F4C775C8D1BB PRP: Verified PRP without proof (small exponent)
2017-10-12	kkmrkkblmbrbk	C-PRP	M3391/298409/1519169 : B4D5D6010B17C3C9 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M3391/298409/1519169 : B4D5D6010B17C3C9 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M3391/298409/1519169 : B4D5D6010B17C3C9 PRP without proof (not generated)