What is the GCF of 12, 18 and 24?

What's the Greatest Common Factor (GCF) of 12, 18 and 24?

Answer

GCF of 12, 18 and 24 is

6

Common factors: 1, 2, 3, 6

6 divides all three: 12 ÷ 6 = 2, 18 ÷ 6 = 3, 24 ÷ 6 = 4 — and 2, 3 and 4 have no factor but 1 common to all of them, so no larger number divides all three.

12 = 2² × 3

18 = 2 × 3²

24 = 2³ × 3

Prime	12	18	24	Lowest power
2	2²	2	2³	2
3	3	3²	3	3

GCF = 2 × 3 = 6

More with these numbers

Related Calculations

GCF Table

1st	2nd	3rd	GCF
9	12	18	3
10	12	18	2
11	12	18	1
12	12	18	6
12	13	18	1
12	14	18	2
12	15	18	3
12	16	18	2
12	17	18	1
12	18	18	6
12	18	19	1
12	18	20	2
12	18	21	3
12	18	22	2
12	18	23	1
12	18	24	6
12	18	25	1
12	18	26	2
12	18	27	3
12	18	28	2
12	18	29	1
12	18	30	6
12	18	31	1
12	18	32	2
12	18	33	3
12	18	34	2
12	18	35	1
12	18	36	6
12	18	37	1
12	18	38	2

GCF for 12, 18 and 24

What's the Greatest Common Factor (GCF) of 12, 18 and 24?

More with these numbers

Related Calculations

See Also

GCF Table

FAQ

What's the Greatest Common Factor (GCF) of 12, 18 and 24?

What prime factors do 12, 18 and 24 share?

Can you get the GCF of 12, 18 and 24 two numbers at a time?

How does the GCF simplify the ratio 12 : 18 : 24?

See Also

1st	2nd	3rd	GCF
9	12	18	3
10	12	18	2
11	12	18	1
12	12	18	6
12	13	18	1
12	14	18	2
12	15	18	3
12	16	18	2
12	17	18	1
12	18	18	6
12	18	19	1
12	18	20	2
12	18	21	3
12	18	22	2
12	18	23	1
12	18	24	6
12	18	25	1
12	18	26	2
12	18	27	3
12	18	28	2
12	18	29	1
12	18	30	6
12	18	31	1
12	18	32	2
12	18	33	3
12	18	34	2
12	18	35	1
12	18	36	6
12	18	37	1
12	18	38	2

1st	2nd	3rd	GCF
9	12	18	3
10	12	18	2
11	12	18	1
12	12	18	6
12	13	18	1
12	14	18	2
12	15	18	3
12	16	18	2
12	17	18	1
12	18	18	6
12	18	19	1
12	18	20	2
12	18	21	3
12	18	22	2
12	18	23	1
12	18	24	6
12	18	25	1
12	18	26	2
12	18	27	3
12	18	28	2
12	18	29	1
12	18	30	6
12	18	31	1
12	18	32	2
12	18	33	3
12	18	34	2
12	18	35	1
12	18	36	6
12	18	37	1
12	18	38	2

1st	2nd	3rd	GCF
9	12	18	3
10	12	18	2
11	12	18	1
12	12	18	6
12	13	18	1
12	14	18	2
12	15	18	3
12	16	18	2
12	17	18	1
12	18	18	6
12	18	19	1
12	18	20	2
12	18	21	3
12	18	22	2
12	18	23	1
12	18	24	6
12	18	25	1
12	18	26	2
12	18	27	3
12	18	28	2
12	18	29	1
12	18	30	6
12	18	31	1
12	18	32	2
12	18	33	3
12	18	34	2
12	18	35	1
12	18	36	6
12	18	37	1
12	18	38	2