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GCF and LCM calculator

Find greatest common factor and least common multiple for a list of large integers.

Get started

  1. Use the example values or enter your own measurements.
  2. Calculate, then copy the result or download the available details.

Example

Input

12, 18, 24

Expected result

GCF 6; LCM 72

Try it

Good to know

The calculation runs in your browser. Use consistent units in fields with no explicit unit.

Calculation method

Euclid’s algorithm finds GCF. LCM(a,b) = |a·b| ÷ GCF(a,b) when both are nonzero. Up to 100 integers of 50 digits each.