LCM for 2, 6 and 18

"Least Common Multiple of 3 Numbers" Calculator

What's the Least Common Multiple (LCM) of 2, 6 and 18?

Answer

LCM of 2, 6 and 18 is

First common multiples: 18, 36, 54, …

18 is divisible by all three: 18 ÷ 2 = 9, 18 ÷ 6 = 3, 18 ÷ 18 = 1 — and 9, 3 and 1 have no factor but 1 common to all of them, so no smaller number is. As a common denominator: multiply the top and bottom of x/2 by 9 and of y/6 by 3.

2 — prime

6 = 2 × 3

18 = 2 × 3²

Prime	2	6	18	Highest power
2	2	2	2	2
3	—	3	3²	3²

— = power 0: the prime is not a factor of this number; the LCM takes it from the number that has it.

LCM = 2 × 3² = 18

More with these numbers

Related Calculations

LCM Table

1st	2nd	3rd	LCM
2	3	6	6
2	4	6	12
2	5	6	30
2	6	6	6
2	6	7	42
2	6	8	24
2	6	9	18
2	6	10	30
2	6	11	66
2	6	12	12
2	6	13	78
2	6	14	42
2	6	15	30
2	6	16	48
2	6	17	102
2	6	18	18
2	6	19	114
2	6	20	60
2	6	21	42
2	6	22	66
2	6	23	138
2	6	24	24
2	6	25	150
2	6	26	78
2	6	27	54
2	6	28	84
2	6	29	174
2	6	30	30
2	6	31	186
2	6	32	96

FAQ

What's the Least Common Multiple (LCM) of 2, 6 and 18?

LCM of 2, 6 and 18 is 18

How to find the LCM of 2, 6 and 18 by prime factorization?

Take every prime that appears in 2, 6 and 18 to the highest power it reaches in any one of them and multiply: 2 × 3² = 18.

Can you get the LCM of 2, 6 and 18 two numbers at a time?

Yes. The LCM of 2 and 6 is 6, and the LCM of 6 and 18 is 18 — the same answer, because the least common multiple is associative and does not depend on the order of the three numbers.

Is 18 divisible by 2, 6 and 18?

Yes, and by definition it is the smallest positive integer that is: 18 ÷ 2, 18 ÷ 6 and 18 ÷ 18 all come out whole. Any other common multiple of 2, 6 and 18 is a multiple of 18.

LCM for 2, 6 and 18

What's the Least Common Multiple (LCM) of 2, 6 and 18?

More with these numbers

Related Calculations

See Also

LCM Table

FAQ

What's the Least Common Multiple (LCM) of 2, 6 and 18?

How to find the LCM of 2, 6 and 18 by prime factorization?

Can you get the LCM of 2, 6 and 18 two numbers at a time?

Is 18 divisible by 2, 6 and 18?

See Also

1st	2nd	3rd	LCM
2	3	6	6
2	4	6	12
2	5	6	30
2	6	6	6
2	6	7	42
2	6	8	24
2	6	9	18
2	6	10	30
2	6	11	66
2	6	12	12
2	6	13	78
2	6	14	42
2	6	15	30
2	6	16	48
2	6	17	102
2	6	18	18
2	6	19	114
2	6	20	60
2	6	21	42
2	6	22	66
2	6	23	138
2	6	24	24
2	6	25	150
2	6	26	78
2	6	27	54
2	6	28	84
2	6	29	174
2	6	30	30
2	6	31	186
2	6	32	96

1st	2nd	3rd	LCM
2	3	6	6
2	4	6	12
2	5	6	30
2	6	6	6
2	6	7	42
2	6	8	24
2	6	9	18
2	6	10	30
2	6	11	66
2	6	12	12
2	6	13	78
2	6	14	42
2	6	15	30
2	6	16	48
2	6	17	102
2	6	18	18
2	6	19	114
2	6	20	60
2	6	21	42
2	6	22	66
2	6	23	138
2	6	24	24
2	6	25	150
2	6	26	78
2	6	27	54
2	6	28	84
2	6	29	174
2	6	30	30
2	6	31	186
2	6	32	96

1st	2nd	3rd	LCM
2	3	6	6
2	4	6	12
2	5	6	30
2	6	6	6
2	6	7	42
2	6	8	24
2	6	9	18
2	6	10	30
2	6	11	66
2	6	12	12
2	6	13	78
2	6	14	42
2	6	15	30
2	6	16	48
2	6	17	102
2	6	18	18
2	6	19	114
2	6	20	60
2	6	21	42
2	6	22	66
2	6	23	138
2	6	24	24
2	6	25	150
2	6	26	78
2	6	27	54
2	6	28	84
2	6	29	174
2	6	30	30
2	6	31	186
2	6	32	96