Least Common Multiple (LCM) of 168 and 138
The least common multiple (LCM) of 168 and 138 is 3864.
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 168 and 138?
First, calculate the GCD of 168 and 138 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 168 ÷ 138 = 1 remainder 30 |
| 2 | 138 ÷ 30 = 4 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 |
|---|---|
| 199 and 137 | 27263 |
| 41 and 19 | 779 |
| 195 and 147 | 9555 |
| 141 and 15 | 705 |
| 144 and 80 | 720 |