What is the LCM of 3 and 81?

What's the Least Common Multiple (LCM) of 3 and 81?

Answer

LCM of 3 and 81 is

81

First common multiples: 81, 162, 243, …

As a common denominator: multiply the top and bottom of x/3 by 27.

3 divides 81 (81 ÷ 3 = 27), so the LCM is the larger number itself.

3 — prime

81 = 3⁴

Prime	3	81	Highest power
3	3	3⁴	3⁴

LCM = 3⁴ = 81

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Multiples of a Number - List the first 10 multiples of any number from 1 to 999

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