8 669 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
2618039	7	21.3	old
1337175913	10	30.3	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	8203 / 16550

Estimated T-Level: 47.5 ⓘ

TF below 2^153 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	0B87AE930BB87597	2	0	1	3
Verified	2017-10-12	kkmrkkblmbrbk	0B87AE930BB87597	2	2692	1	3
Verified	2020-04-17	Oliver Kruse	14DF8E7A63C9861C	2	5225	5	3
Verified	2024-07-01	kkmrkkblmbrbk	14DF8E7A63C9861C	2	5122	5	3

History

Date	User	Type	Result
2024-07-01	kkmrkkblmbrbk	C-PRP	M8669/1337175913/2618039 : 14DF8E7A63C9861C PRP: Verified PRP without proof (small exponent)
2023-08-12	JacobZ	NF-PM1	B1=67000000000, B2=265422648792401100
2021-12-16	Lisander Viaene	NF-PM1	B1=100000000
2020-04-17	Oliver Kruse	C-PRP	M8669/2618039/1337175913 : 14DF8E7A63C9861C PRP: Verified PRP without proof (small exponent)
2017-10-12	kkmrkkblmbrbk	C-PRP	M8669/2618039/1337175913 : 0B87AE930BB87597 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M8669/2618039/1337175913 : 0B87AE930BB87597 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M8669/2618039/1337175913 : 0B87AE930BB87597 PRP without proof (not generated)