What is the LCM of 42 and 86?

What's the Least Common Multiple (LCM) of 42 and 86?

Answer

LCM of 42 and 86 is

1,806

First common multiples: 1,806; 3,612; 5,418; …

1,806 is divisible by both: 1,806 ÷ 42 = 43; 1,806 ÷ 86 = 21 — and 43 and 21 share no factor but 1, so no smaller number is. As a common denominator: multiply the top and bottom of x/42 by 43 and of y/86 by 21.

42 = 2 × 3 × 7

86 = 2 × 43

Prime	42	86	Highest power
2	2	2	2
3	3	—	3
7	7	—	7
43	—	43	43

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

LCM = 2 × 3 × 7 × 43 = 1,806

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What is the LCM of 42 and 86? The LCM of 42 and 86 is 1,806 — the smallest common multiple of both integers.

https://calculat.io/en/number/least-common-multiple-lcm-of/42--86/generated.jpg

LCM Table

Number 1	Number 2	LCM
42	28	84
42	44	924
42	45	630
42	48	336
42	49	294
42	50	1,050
42	52	1,092
42	53	2,226
42	56	168
42	58	1,218
42	60	420
42	63	126
42	65	2,730
42	70	210
42	72	504
42	80	1,680
42	84	84
42	86	1,806
42	90	630
42	96	672
42	98	294
42	100	2,100
42	105	210
42	126	126
42	1,365	2,730

LCM for 42 and 86

What's the Least Common Multiple (LCM) of 42 and 86?

More with these numbers

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LCM Table

FAQ

What's the Least Common Multiple (LCM) of 42 and 86?

How to find the LCM of 42 and 86 using prime factorization?

What is the difference between LCM and GCF?

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