Arithmetic & Number Theory
Least Common Multiple
Smallest common multiple of two integers.
Formula
Formula
lcm = a·bgcd(a, b)
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| a | first integer | integer (ℤ) | — | input |
| b | second integer | integer (ℤ) | — | input |
| lcm | least common multiple | computed result | — | result |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givena = 4, b = 6
Result12
Example 2
Givena = 21, b = 6
Result42