11 833 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
70999	5	16.1	old
1135969	7	20.1	2008-08-26 19:58:35
5522981753	10	32.4	2008-08-26 19:58:35

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	1895 / 9201

Estimated T-Level: 41.0 ⓘ

TF below 2^131 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	CB778DC784C4771B	3	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	CB778DC784C4771B	3	2203	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	198503CFFE0C9BF5	3	737	5	3
Verified	No proof (small exponent)	2024-07-01	kkmrkkblmbrbk	198503CFFE0C9BF5	3	2211	5	3

History

Date	User	Type	Result
2025-03-11	masser	NF-PP1	Start=176/31, B1=430000000, B2=429570000000
2025-02-25	masser	NF-PP1	Start=6/5, B1=430000000, B2=429570000000
2025-01-21	masser	NF-PP1	Start=2/7, B1=430000000, B2=429570000000
2024-07-01	kkmrkkblmbrbk	C-PRP	M11833/1135969/5522981753/70999 : 198503CFFE0C9BF5
2023-03-26	-anonymous-	NF-PM1	B1=100000000000, B2=122192573512709700
2020-04-17	Oliver Kruse	C-PRP	M11833/70999/1135969/5522981753 : 198503CFFE0C9BF5
2017-10-12	kkmrkkblmbrbk	C-PRP	M11833/70999/1135969/5522981753 : CB778DC784C4771B
2017-09-21	Oliver Kruse	C-PRP	M11833/70999/1135969/5522981753 : CB778DC784C4771B
2017-09-21	Oliver Kruse	C-PRP	M11833/70999/1135969/5522981753 : CB778DC784C4771B
2016-09-07	kkmrkkblmbrbk	NF-PM1	B1=100000000, B2=10000000000, E=12
2011-02-05	Oscar Östlin	F	Factor: 445443186251070673343
2008-08-26	-anonymous-	F	Factor: 5522981753
2008-08-26	-anonymous-	F	Factor: 1135969