Least Common Multiple (LCM) of 123 and 73
The least common multiple (LCM) of 123 and 73 is 8979.
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 123 and 73?
First, calculate the GCD of 123 and 73 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 123 ÷ 73 = 1 remainder 50 |
| 2 | 73 ÷ 50 = 1 remainder 23 |
| 3 | 50 ÷ 23 = 2 remainder 4 |
| 4 | 23 ÷ 4 = 5 remainder 3 |
| 5 | 4 ÷ 3 = 1 remainder 1 |
| 6 | 3 ÷ 1 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 138 and 182 | 12558 |
| 196 and 129 | 25284 |
| 41 and 14 | 574 |
| 189 and 84 | 756 |
| 135 and 81 | 405 |