MMC de 3 Números
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
associativa
About this calculator
The LCM of 3 Numbers calculator finds the least common multiple among three integer values. The LCM is the smallest positive number that is a multiple of all given numbers. The tool uses the associative property: first calculates the LCM of the first two numbers, then the LCM of that result with the third number. This simplifies the process and ensures accuracy.
To use the calculator, enter three integers (positive, negative, or zero). The result is displayed instantly. LCM is useful in fraction problems, such as adding or subtracting fractions with different denominators, or in situations involving periodic cycles, like finding when simultaneous events will occur again.
Cautions: negative numbers are treated as absolute values, since LCM is defined for natural numbers. Zero has no defined LCM (theoretically, LCM of zero with any number is zero, but the calculator may return zero). Ensure integer inputs; invalid entries produce an error.
Frequently asked questions
What does LCM mean?
LCM stands for Least Common Multiple, the smallest positive number that is a multiple of two or more numbers.
How to calculate the LCM of 3 numbers manually?
Calculate the LCM of the first two numbers, then the LCM of that result with the third number. Alternatively, use simultaneous prime factorization.
What if one of the numbers is zero?
The LCM of zero with any number is theoretically zero, but it is not standard. The calculator may return zero.
Can I use negative numbers?
Yes, the calculator converts negatives to positives, since LCM is defined for natural numbers.
What is a practical application of LCM?
Used to add fractions with different denominators, solve problems involving periodicity, and synchronize events.