LCM Calculator
Find the least common multiple with prime factors and the GCD-based formula.
Results
LCM-
Prime Factors-
Formula Used-
What is an LCM Calculator?
A Least Common Multiple (LCM) calculator finds the smallest positive integer that is divisible by each number in a given set. It is commonly used when adding or comparing fractions.
How to Use
- Enter two or more numbers separated by commas.
- Click Calculate to see the LCM, prime factorization, and formula applied.
Frequently Asked Questions
What is the formula for LCM?
For two numbers, lcm(a,b) = |a × b| / gcd(a,b). For more numbers, it is applied iteratively.
Can I enter more than two numbers?
Yes. The calculator computes the LCM for the entire set iteratively.
What is LCM used for?
LCM is used to find common denominators when adding fractions and to solve problems involving repeating cycles.
Can I use negative numbers?
Yes. The calculator uses absolute values since LCM is defined for positive integers.