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 |
|---|---|
| 155 and 77 | 11935 |
| 99 and 191 | 18909 |
| 107 and 153 | 16371 |
| 140 and 152 | 5320 |
| 32 and 173 | 5536 |