Lowest Common Multiple (LCM) Calculator

Find the Lowest Common Multiple with Step-by-Step Solutions

Calculate the LCM of two positive integers using prime factorization. Complete step-by-step explanation shown.

What is the Lowest Common Multiple?

The Lowest Common Multiple (LCM) of two or more integers is the smallest positive integer that is divisible by all of them.

Method: Find the prime factorization of each number, then take the highest power of each prime factor.

Example: Find LCM of 12 and 18
12 = 2² × 3
18 = 2 × 3²
LCM = 2² × 3² = 4 × 9 = 36

\( M \) (first positive integer)

\( N \) (second positive integer)

Enter positive integers (greater than 0).

Lowest Common Multiple

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Enter two positive integers and click "Find LCM"

📐 Step-by-step solution will appear here after calculation.