11 969 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
287257	6	18.1	old
12711079	8	23.6	2008-08-26 19:58:35
280824863732799200944776473	27	87.9	2008-10-25 20:59:11

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	1754 / 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	00AC073C0084CE9D	3	0	1	3
Verified	No proof (small exponent)	2017-10-02	kkmrkkblmbrbk	00AC073C0084CE9D	3	0	1	3
Verified	No proof (small exponent)	2017-12-07	ATH	00AC073C0084CE9D	3	6117	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	41DE68BE9E9DEBB2	3	1220	5	3
Verified	No proof (small exponent)	2024-07-01	kkmrkkblmbrbk	41DE68BE9E9DEBB2	3	6588	5	3

History

Date	User	Type	Result
2025-03-10	masser	NF-PP1	Start=162/11, B1=430000000, B2=429570000000
2025-02-27	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	M11969/12711079/280824863732799200944776473/287257 : 41DE68BE9E9DEBB2
2023-04-06	-anonymous-	NF-PM1	B1=100000000000, B2=122192573512709700
2020-04-17	Oliver Kruse	C-PRP	M11969/287257/12711079/280824863732799200944776473 : 41DE68BE9E9DEBB2
2017-12-07	ATH	C-PRP	M11969/287257/12711079/280824863732799200944776473 : 00AC073C0084CE9D
2017-10-02	kkmrkkblmbrbk	C-PRP	M11969/287257/12711079/280824863732799200944776473 : 00AC073C0084CE9D
2017-09-21	Oliver Kruse	C-PRP	M11969/287257/12711079/280824863732799200944776473 : 00AC073C0084CE9D
2017-09-21	Oliver Kruse	C-PRP	M11969/287257/12711079/280824863732799200944776473 : 00AC073C0084CE9D
2016-09-07	kkmrkkblmbrbk	NF-PM1	B1=100000000, B2=10000000000, E=12
2011-02-05	Oscar Östlin	F-PM1	Factor: 280824863732799200944776473
2008-10-25	Will Edgington	F-ECM	Factor: 280824863732799200944776473
2008-08-26	-anonymous-	F	Factor: 12711079