Least Common Multiple (LCM) of 122 and 138
The least common multiple (LCM) of 122 and 138 is 8418.
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 122 and 138?
First, calculate the GCD of 122 and 138 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 122 ÷ 138 = 0 remainder 122 |
| 2 | 138 ÷ 122 = 1 remainder 16 |
| 3 | 122 ÷ 16 = 7 remainder 10 |
| 4 | 16 ÷ 10 = 1 remainder 6 |
| 5 | 10 ÷ 6 = 1 remainder 4 |
| 6 | 6 ÷ 4 = 1 remainder 2 |
| 7 | 4 ÷ 2 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 183 and 194 | 35502 |
| 178 and 42 | 3738 |
| 86 and 43 | 86 |
| 189 and 28 | 756 |
| 25 and 66 | 1650 |