14 149 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
311279	6	18.2	old
424471	6	18.7	2008-08-26 19:58:42

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	1428 / 9201

Estimated T-Level: 40.8 ⓘ

TF below 2^130 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	97DA67C90CA66DB1	2	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	97DA67C90CA66DB1	2	284	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	53D295F23872F476	2	12199	5	3
Verified	No proof (small exponent)	2024-07-01	kkmrkkblmbrbk	53D295F23872F476	2	12883	5	3

History

Date	User	Type	Result
2025-02-16	masser	NF-PP1	Start=125/43, B1=355000000, B2=354645000000
2025-02-08	masser	NF-PP1	Start=2/7, B1=355000000, B2=354645000000
2025-01-20	masser	NF-PP1	Start=6/5, B1=355000000, B2=354645000000
2024-07-01	kkmrkkblmbrbk	C-PRP	M14149/311279/424471 : 53D295F23872F476
2024-01-29	-anonymous-	NF-PM1	B1=100000000000, B2=122154521813133810
2023-05-23	JacobZ	NF-PM1	B1=7700000000, B2=32522539163164050
2023-02-11	USAFSS	NF-PM1	B1=60000000, B2=4543108760190
2022-02-06	ANONYMOUS	NF-PM1	B1=50000
2020-04-17	Oliver Kruse	C-PRP	M14149/311279/424471 : 53D295F23872F476
2017-10-12	kkmrkkblmbrbk	C-PRP	M14149/311279/424471 : 97DA67C90CA66DB1
2017-09-21	Oliver Kruse	C-PRP	M14149/311279/424471 : 97DA67C90CA66DB1
2017-09-21	Oliver Kruse	C-PRP	M14149/311279/424471 : 97DA67C90CA66DB1
2008-08-26	-anonymous-	F	Factor: 424471