12 119 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
24239	5	14.6	old
8570677991	10	33.0	2008-08-26 19:58:36

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	1615 / 9201

Estimated T-Level: 40.9 ⓘ

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	46C4A72A6132B48D	2	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	46C4A72A6132B48D	2	7196	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	9C88B1D93C8E4B09	2	6278	5	3
Factored	No proof (small exponent)	2022-05-12	Jorge Coveiro	9C88B1D93C8E4B09	1	4643	5	3
Verified	No proof (small exponent)	2023-05-19	-anonymous-	9C88B1D93C8E4B09	2	1117	5	3

History

Date	User	Type	Result
2025-03-08	masser	NF-PP1	Start=156/61, B1=430000000, B2=429570000000
2025-02-25	masser	NF-PP1	Start=6/5, B1=430000000, B2=429570000000
2025-01-20	masser	NF-PP1	Start=2/7, B1=430000000, B2=429570000000
2023-05-19	-anonymous-	C-PRP	M12119/24239/8570677991 : 9C88B1D93C8E4B09
2023-04-06	-anonymous-	NF-PM1	B1=100000000000, B2=120942232635634410
2022-05-12	Jorge Coveiro	C-PRP	M12119/24239 : 9C88B1D93C8E4B09
2020-04-17	Oliver Kruse	C-PRP	M12119/24239/8570677991 : 9C88B1D93C8E4B09
2017-10-12	kkmrkkblmbrbk	C-PRP	M12119/24239/8570677991 : 46C4A72A6132B48D
2017-09-21	Oliver Kruse	C-PRP	M12119/24239/8570677991 : 46C4A72A6132B48D
2017-09-21	Oliver Kruse	C-PRP	M12119/24239/8570677991 : 46C4A72A6132B48D
2016-09-08	kkmrkkblmbrbk	NF-PM1	B1=100000000, B2=10000000000, E=12
2008-08-26	-anonymous-	F	Factor: 8570677991