14 479 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
27885728233673	14	44.7	old
4097224470488801797678286875338666221281	40	131.6	2026-04-13 12:59:18
69265417570661766966870005567519507775167	41	135.7	2026-04-01 23:48:50

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	4367 / 9201

Estimated T-Level: 42.4 ⓘ

TF below 2^136 is very unlikely to find new factors due to ECM effort.

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Factored	No proof (small exponent)	2017-09-21	Oliver Kruse	BCE8590CEC1E4E39	1	0	1	3
Factored	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	BCE8590CEC1E4E39	1	11664	1	3
Factored	No proof (small exponent)	2020-04-17	Oliver Kruse	C468F4E388C2D0A4	1	8459	5	3
Factored	No proof (small exponent)	2024-07-01	kkmrkkblmbrbk	C468F4E388C2D0A4	1	2988	5	3
Factored	No proof (small exponent)	2026-04-01	Elysia	C468F4E388C2D0A4	2	6657	5	3
Verified	No proof (small exponent)	2026-04-13	Elysia	C468F4E388C2D0A4	3	13740	5	3

History

Date	User	Type	Result
2026-04-13	Elysia	C-PRP	M14479/27885728233673/69265417570661766966870005567519507775167/4097224470488801797678286875338666221281 : C468F4E388C2D0A4
2026-04-13	Elysia	F-ECM	Factor: 4097224470488801797678286875338666221281 / ECM curve 19, B1=19709546, B2=124237323210, Edwards Sigma=2024960111526000
2026-04-01	Elysia	C-PRP	M14479/27885728233673/69265417570661766966870005567519507775167 : C468F4E388C2D0A4
2026-04-01	Elysia	F-ECM	Factor: 69265417570661766966870005567519507775167 / ECM curve 1, B1=12792276, Edwards Sigma=3702483304125582
2025-02-11	masser	NF-PP1	Start=124/43, B1=355000000, B2=354645000000
2025-02-07	masser	NF-PP1	Start=2/7, B1=355000000, B2=354645000000
2025-01-18	masser	NF-PP1	Start=6/5, B1=355000000, B2=354645000000
2024-07-01	kkmrkkblmbrbk	C-PRP	M14479/27885728233673 : C468F4E388C2D0A4
2023-11-30	-anonymous-	NF-PM1	B1=100000000000, B2=122815096988293710
2023-05-25	JacobZ	NF-PM1	B1=7500000000, B2=29520458628010350
2022-01-23	Ethan O'Connor	NF-PM1	B1=10000000, B2=193024403281710
2020-04-17	Oliver Kruse	C-PRP	M14479/27885728233673 : C468F4E388C2D0A4
2017-10-12	kkmrkkblmbrbk	C-PRP	M14479/27885728233673 : BCE8590CEC1E4E39
2017-09-21	Oliver Kruse	C-PRP	M14479/27885728233673 : BCE8590CEC1E4E39
2017-09-21	Oliver Kruse	C-PRP	M14479/27885728233673 : BCE8590CEC1E4E39