What is the LCM of 6, 18 and 30?

What's the Least Common Multiple (LCM) of 6, 18 and 30?

Answer

LCM of 6, 18 and 30 is

90

First common multiples: 90, 180, 270, …

90 is divisible by all three: 90 ÷ 6 = 15, 90 ÷ 18 = 5, 90 ÷ 30 = 3 — and 15, 5 and 3 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/6 by 15 and of y/18 by 5 and of z/30 by 3.

6 = 2 × 3

18 = 2 × 3²

30 = 2 × 3 × 5

Prime	6	18	30	Highest power
2	2	2	2	2
3	3	3²	3	3²
5	—	—	5	5

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

LCM = 2 × 3² × 5 = 90

More with these numbers

Related Calculations

LCM Table

1st	2nd	3rd	LCM
6	15	18	90
6	16	18	144
6	17	18	306
6	18	18	18
6	18	19	342
6	18	20	180
6	18	21	126
6	18	22	198
6	18	23	414
6	18	24	72
6	18	25	450
6	18	26	234
6	18	27	54
6	18	28	252
6	18	29	522
6	18	30	90
6	18	31	558
6	18	32	288
6	18	33	198
6	18	34	306
6	18	35	630
6	18	36	36
6	18	37	666
6	18	38	342
6	18	39	234
6	18	40	360
6	18	41	738
6	18	42	126
6	18	43	774
6	18	44	396

LCM for 6, 18 and 30

What's the Least Common Multiple (LCM) of 6, 18 and 30?

More with these numbers

Related Calculations

See Also

LCM Table

FAQ

What's the Least Common Multiple (LCM) of 6, 18 and 30?

How to find the LCM of 6, 18 and 30 by prime factorization?

Can you get the LCM of 6, 18 and 30 two numbers at a time?

Is 90 divisible by 6, 18 and 30?

See Also

1st	2nd	3rd	LCM
6	15	18	90
6	16	18	144
6	17	18	306
6	18	18	18
6	18	19	342
6	18	20	180
6	18	21	126
6	18	22	198
6	18	23	414
6	18	24	72
6	18	25	450
6	18	26	234
6	18	27	54
6	18	28	252
6	18	29	522
6	18	30	90
6	18	31	558
6	18	32	288
6	18	33	198
6	18	34	306
6	18	35	630
6	18	36	36
6	18	37	666
6	18	38	342
6	18	39	234
6	18	40	360
6	18	41	738
6	18	42	126
6	18	43	774
6	18	44	396

1st	2nd	3rd	LCM
6	15	18	90
6	16	18	144
6	17	18	306
6	18	18	18
6	18	19	342
6	18	20	180
6	18	21	126
6	18	22	198
6	18	23	414
6	18	24	72
6	18	25	450
6	18	26	234
6	18	27	54
6	18	28	252
6	18	29	522
6	18	30	90
6	18	31	558
6	18	32	288
6	18	33	198
6	18	34	306
6	18	35	630
6	18	36	36
6	18	37	666
6	18	38	342
6	18	39	234
6	18	40	360
6	18	41	738
6	18	42	126
6	18	43	774
6	18	44	396

1st	2nd	3rd	LCM
6	15	18	90
6	16	18	144
6	17	18	306
6	18	18	18
6	18	19	342
6	18	20	180
6	18	21	126
6	18	22	198
6	18	23	414
6	18	24	72
6	18	25	450
6	18	26	234
6	18	27	54
6	18	28	252
6	18	29	522
6	18	30	90
6	18	31	558
6	18	32	288
6	18	33	198
6	18	34	306
6	18	35	630
6	18	36	36
6	18	37	666
6	18	38	342
6	18	39	234
6	18	40	360
6	18	41	738
6	18	42	126
6	18	43	774
6	18	44	396