11 443 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 3 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
1891460271871	13	40.8	old
9591199965750217092135898215555428892049	40	132.8	2019-04-21 10:39:13
2489383246892004396666794581013758609720321481	46	150.8	2022-04-02 12:24:10

P-1 factors

Date	Factors	B1	B2
2023-01-20	No new factors discovered	100000000000	122192573512709696

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	2313 / 9201

Estimated T-Level: 41.3 ⓘ

TF below 2^132 is very unlikely to find new factors due to ECM effort.

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Factored	No proof (small exponent)	2017-09-21	Oliver Kruse	2FDC95EEE376142F	1	0	1	3
Factored	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	2FDC95EEE376142F	1	11442	1	3
Factored	No proof (small exponent)	2019-04-22	_p95holder_	EA4CAF7BA91D7CB5	2	10129	5	3
Factored	No proof (small exponent)	2019-04-22	matzetoni	EA4CAF7BA91D7CB5	2	7333	5	3
Factored	No proof (small exponent)	2019-04-23	_p95holder_	EA4CAF7BA91D7CB5	2	5374	5	3
Factored	No proof (small exponent)	2019-04-23	kkmrkkblmbrbk	EA4CAF7BA91D7CB5	2	10510	5	3
Verified	No proof (small exponent)	2022-04-02	mikr	EA4CAF7BA91D7CB5	3	8215	5	3
Verified	No proof (small exponent)	2022-04-02	aperson1	EA4CAF7BA91D7CB5	3	11237	5	3

History

Date	User	Type	Result
2025-03-15	masser	NF-PP1	Start=86/53, B1=430000000, B2=43000000000
2025-03-03	masser	NF-PP1	Start=6/5, B1=430000000, B2=429570000000
2025-01-23	masser	NF-PP1	Start=2/7, B1=430000000, B2=429570000000
2023-01-20	-anonymous-	F-PM1	Factor: 9591199965750217092135898215555428892049 / B1=100000000000, B2=122192573512709700
2022-04-02	aperson1	C-PRP	M11443/1891460271871/9591199965750217092135898215555428892049/2489383246892004396666794581013758609720321481 : EA4CAF7BA91D7CB5
2022-04-02	mikr	C-PRP	M11443/1891460271871/9591199965750217092135898215555428892049/2489383246892004396666794581013758609720321481 : EA4CAF7BA91D7CB5
2022-04-02	Ryan Propper	F-ECM	Factor: 2489383246892004396666794581013758609720321481
2019-04-23	kkmrkkblmbrbk	C-PRP	M11443/1891460271871/9591199965750217092135898215555428892049 : EA4CAF7BA91D7CB5
2019-04-23	_p95holder_	C-PRP	M11443/1891460271871/9591199965750217092135898215555428892049 : EA4CAF7BA91D7CB5
2019-04-22	matzetoni	C-PRP	M11443/1891460271871/9591199965750217092135898215555428892049 : EA4CAF7BA91D7CB5
2019-04-22	_p95holder_	C-PRP	M11443/1891460271871/9591199965750217092135898215555428892049 : EA4CAF7BA91D7CB5
2019-04-21	alex	F-ECM	Factor: 9591199965750217092135898215555428892049 / ECM curve 879, B1=3000000, B2=300000000, Montgomery Sigma=3108123467037226
2017-10-12	kkmrkkblmbrbk	C-PRP	M11443/1891460271871 : 2FDC95EEE376142F
2017-09-21	Oliver Kruse	C-PRP	M11443/1891460271871 : 2FDC95EEE376142F
2017-09-21	Oliver Kruse	C-PRP	M11443/1891460271871 : 2FDC95EEE376142F
2016-09-07	kkmrkkblmbrbk	NF-PM1	B1=100000000, B2=10000000000, E=12