4 481 Exponent Status

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
14479706658892300816736754888747697	35	113.5	old

ECM

Estimated T-Level: 52.0 ⓘ

TF below 2^168 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	8ABD51DDE48A8E11	1	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	8ABD51DDE48A8E11	1	2275	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	EFC6C6D8573EE391	1	1721	5	3
Verified	No proof (small exponent)	2024-02-03	Wentao Huang	EFC6C6D8573EE391	1	1230	5	3

History

Date	User	Type	Result
2025-05-16	masser	NF-PP1	Start=116/41, B1=2100000000, B2=2097900000000
2024-02-03	Wentao Huang	C-PRP	M4481/14479706658892300816736754888747697 : EFC6C6D8573EE391
2023-05-23	-anonymous-	NF-PM1	B1=71000000000, B2=711884755657775700
2021-07-06	ViliamF	NF-PM1	B1=1000000000, B2=201000000000
2020-04-17	Oliver Kruse	C-PRP	M4481/14479706658892300816736754888747697 : EFC6C6D8573EE391
2017-10-12	kkmrkkblmbrbk	C-PRP	M4481/14479706658892300816736754888747697 : 8ABD51DDE48A8E11
2017-09-21	Oliver Kruse	C-PRP	M4481/14479706658892300816736754888747697 : 8ABD51DDE48A8E11
2017-09-21	Oliver Kruse	C-PRP	M4481/14479706658892300816736754888747697 : 8ABD51DDE48A8E11
2003-01-16	-anonymous-	NF	no factor TF: 1-57
2003-01-09	-anonymous-	NF-PM1	B1=4290000000
2002-09-22	-anonymous-	NF-PM1	B1=3221225472, B2=4290000000, E=48
2002-08-10	-anonymous-	NF-PM1	B1=2147483648, B2=4290000000, E=48
2002-06-02	-anonymous-	NF-PM1	B1=1073741824, B2=4290000000, E=48
2001-07-03	-anonymous-	NF-PM1	B1=3000000000, B2=4290000000
2001-06-17	-anonymous-	NF-PM1	B1=43000000, B2=4290000000
2001-02-11	-anonymous-	NF-PM1	B1=1000000, B2=100000000
2000-08-24	-anonymous-	NF	no factor TF: 1-56
2000-02-09	-anonymous-	NF	no factor TF: 54-55
1999-12-30	-anonymous-	NF	no factor TF: 53-54
1999-09-22	-anonymous-	NF	no factor TF: 52-53

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