๐GCF & LCM Calculator
Enter two or more positive integers to find their GCF and LCM using prime factorization.
Enter 2 or more positive integers, e.g. 24, 36, 60
Free GCF & LCM Calculator
This GCF and LCM calculator finds the greatest common factor and least common multiple of two or more numbers using prime factorization. Each number is broken into its prime factors, then the GCF takes the lowest power of each shared prime, and the LCM takes the highest power of every prime that appears in any number.
GCF is useful for simplifying fractions and factoring expressions; LCM is essential for adding fractions with different denominators and scheduling problems involving repeating cycles. The prime factorization table below shows exactly how each result is built.
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