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Least Common Multiple Calculator

To find the least common multiple, enter all the positive integers separated by comma or space, .e.g., 75, 90, 135:

About This Tool

The online Least Common Multiple Calculator is used to find out the least common multiple (LCM) of two or more positive integers.

Least Common Multiple

The least common multiple (also called the lowest common multiple or smallest common multiple) of two integers a and b, usually denoted by LCM(a, b), is the smallest positive integer that is a multiple of both a and b. The least common multiple of more than two integers or rational numbers is well-defined: it is the smallest number that is an integer multiple of each of them.

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