Least Common Multiple (LCM) of 138 and 108
The least common multiple (LCM) of 138 and 108 is 2484.
What is the Least Common Multiple (LCM)?
The LCM of two integers is the smallest positive integer that is divisible by both numbers. It is often used to find common denominators and solve problems involving periodic events.
Formula for LCM
The LCM of two numbers can be calculated using their GCD:
LCM(a, b) = |a × b| ÷ GCD(a, b)
How to Calculate the LCM of 138 and 108?
First, calculate the GCD of 138 and 108 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 138 ÷ 108 = 1 remainder 30 |
| 2 | 108 ÷ 30 = 3 remainder 18 |
| 3 | 30 ÷ 18 = 1 remainder 12 |
| 4 | 18 ÷ 12 = 1 remainder 6 |
| 5 | 12 ÷ 6 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 116 and 164 | 4756 |
| 81 and 128 | 10368 |
| 152 and 30 | 2280 |
| 45 and 38 | 1710 |
| 39 and 173 | 6747 |