9 749 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 2 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
1464871576744217	16	50.4	old
65903609610877159128829561609634790791	38	125.6	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	6846 / 16550

Estimated T-Level: 47.1 ⓘ

TF below 2^151 is very unlikely to find new factors due to ECM effort.

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	No proof (small exponent)	2017-09-21	Oliver Kruse	3038D3365373B058	2	0	1	3
Verified	No proof (small exponent)	2017-10-02	kkmrkkblmbrbk	3038D3365373B058	2	0	1	3
Verified	No proof (small exponent)	2017-12-07	ATH	3038D3365373B058	2	941	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	EA51CC128864349D	2	4616	5	3
Verified	No proof (small exponent)	2024-07-01	kkmrkkblmbrbk	EA51CC128864349D	2	5715	5	3

History

Date	User	Type	Result
2025-03-24	masser	NF-PP1	Start=111/71, B1=1000000000, B2=999000000000
2024-07-01	kkmrkkblmbrbk	C-PRP	M9749/1464871576744217/65903609610877159128829561609634790791 : EA51CC128864349D
2023-06-17	JacobZ	NF-PM1	B1=59000000000, B2=250256095608669150
2022-02-05	Joss	NF-PM1	B1=1000000, B2=6010952007060
2020-04-17	Oliver Kruse	C-PRP	M9749/1464871576744217/65903609610877159128829561609634790791 : EA51CC128864349D
2017-12-07	ATH	C-PRP	M9749/1464871576744217/65903609610877159128829561609634790791 : 3038D3365373B058
2017-10-02	kkmrkkblmbrbk	C-PRP	M9749/1464871576744217/65903609610877159128829561609634790791 : 3038D3365373B058
2017-09-21	Oliver Kruse	C-PRP	M9749/known_factors : 3038D3365373B058