LCM Calculator - Least Common Multiple Calculator

The LCM (a,b), is calculated by finding prime factorizations of both a & b. For LCM of more numbers than 2, use the same process.

To find the LCM for a set number of numbers, the cake method uses division. Because it's simple division, people use the ladder or cake method to find the LCM.

The cake method can be used to find LCM using the same method as the ladder, box, factor box, and grid methods of shortcuts. Although the boxes and grids may look different, they all use division of primes to find LCM.

Venn diagrams look like overlapping circles. They are used for illustrating common elements or intersections between 2 or more objects. Venn diagrams are used for finding the LCM. Prim factors of each number are called the groups and are placed among overlapping circles. These circles show the intersections between the groups. Once you have completed the Venn Diagram, you can find your LCM by finding the union between the elements of the diagram groups and multiplying these together.