11 699 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
23399	5	14.5	old
561553	6	19.1	2008-08-26 19:58:35
3619986675395752226328457	25	81.6	2008-10-16 23:57:25

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	2135 / 9201

Estimated T-Level: 41.2 ⓘ

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
Verified	No proof (small exponent)	2017-09-21	Oliver Kruse	13280F1E5A285496	3	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	13280F1E5A285496	3	7954	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	E13E8DEFD0359877	3	3085	5	3
Factored	No proof (small exponent)	2022-05-12	Jorge Coveiro	E13E8DEFD0359877	1	1521	5	3
Verified	No proof (small exponent)	2024-07-01	kkmrkkblmbrbk	E13E8DEFD0359877	3	9714	5	3

History

Date	User	Type	Result
2025-03-12	masser	NF-PP1	Start=153/71, B1=430000000, B2=429570000000
2025-03-03	masser	NF-PP1	Start=6/5, B1=430000000, B2=429570000000
2025-01-22	masser	NF-PP1	Start=2/7, B1=430000000, B2=429570000000
2024-07-01	kkmrkkblmbrbk	C-PRP	M11699/23399/3619986675395752226328457/561553 : E13E8DEFD0359877
2023-01-20	-anonymous-	NF-PM1	B1=100000000000, B2=122192573512709700
2022-05-12	Jorge Coveiro	C-PRP	M11699/23399 : E13E8DEFD0359877
2020-04-17	Oliver Kruse	C-PRP	M11699/23399/561553/3619986675395752226328457 : E13E8DEFD0359877
2017-10-12	kkmrkkblmbrbk	C-PRP	M11699/23399/561553/3619986675395752226328457 : 13280F1E5A285496
2017-09-21	Oliver Kruse	C-PRP	M11699/23399/561553/3619986675395752226328457 : 13280F1E5A285496
2017-09-21	Oliver Kruse	C-PRP	M11699/23399/561553/3619986675395752226328457 : 13280F1E5A285496
2016-09-07	kkmrkkblmbrbk	NF-PM1	B1=100000000, B2=10000000000, E=12
2008-10-16	-anonymous-	F-ECM	Factor: 3619986675395752226328457
2008-08-26	-anonymous-	F	Factor: 561553