This math skill teaches how to find the lowest common multiple (LCM) of two numbers using their prime factors. Identify all distinct prime factors, counting shared factors only once, and multiply them to find the LCM.
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Find lowest common multiple from factored numbers
Test your understanding of find LCM from factored numbers by practicing it! Work through the below exercises to use it in practice.
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Let's find the lowest common multiple of 8 and 12. We already have their prime factors here
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Find the set of all distinct factors. Shared factors are only counted once. That becomes 2, 2, 2, and 3
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Multiplying this set of distinct factors together we get a lowest common multiple of 24