What is the LCM of 63 and 42?

What's the Least Common Multiple (LCM) of 63 and 42?

Answer

LCM of 63 and 42 is

126

First common multiples: 126, 252, 378, …

126 is divisible by both: 126 ÷ 63 = 2, 126 ÷ 42 = 3 — and 2 and 3 share no factor but 1, so no smaller number is. As a common denominator: multiply the top and bottom of x/63 by 2 and of y/42 by 3.

63 = 3² × 7

42 = 2 × 3 × 7

Prime	63	42	Highest power
2	—	2	2
3	3²	3	3²
7	7	7	7

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

LCM = 2 × 3² × 7 = 126

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What is the LCM of 63 and 42? The LCM of 63 and 42 is 126 — the smallest common multiple of both integers.

https://calculat.io/en/number/least-common-multiple-lcm-of/63--42/generated.jpg

LCM Table

Number 1	Number 2	LCM
63	27	189
63	28	252
63	29	1,827
63	30	630
63	31	1,953
63	32	2,016
63	33	693
63	34	2,142
63	35	315
63	36	252
63	37	2,331
63	38	2,394
63	39	819
63	40	2,520
63	41	2,583
63	42	126
63	43	2,709
63	44	2,772
63	45	315
63	46	2,898
63	47	2,961
63	48	1,008
63	49	441
63	50	3,150
63	51	1,071
63	52	3,276
63	53	3,339
63	54	378
63	55	3,465
63	56	504

LCM for 63 and 42

What's the Least Common Multiple (LCM) of 63 and 42?

More with these numbers

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LCM Table

FAQ

What's the Least Common Multiple (LCM) of 63 and 42?

How to find the LCM of 63 and 42 using prime factorization?

What is the difference between LCM and GCF?

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