Solutions by » LCM of two numbers

What is the LCM of 1 and 3?

The LCM of 1 and 3 is 3.

Steps to find LCM

  1. Find the prime factorization of 1
    1 = 1
  2. Find the prime factorization of 3
    3 = 3
  3. Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:

    LCM = 3

MathStep (Works offline)

Download our mobile app and learn how to find LCM of upto four numbers in your own time:
Android and iPhone/ iPad

Find least common multiple (LCM) of:

LCM Calculator

Enter two numbers separate by comma. To find least common multiple (LCM) of more than two numbers, click here.