Least Common Multiple (LCM) of 120 and 173
The least common multiple (LCM) of 120 and 173 is 20760.
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 120 and 173?
First, calculate the GCD of 120 and 173 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 120 ÷ 173 = 0 remainder 120 |
| 2 | 173 ÷ 120 = 1 remainder 53 |
| 3 | 120 ÷ 53 = 2 remainder 14 |
| 4 | 53 ÷ 14 = 3 remainder 11 |
| 5 | 14 ÷ 11 = 1 remainder 3 |
| 6 | 11 ÷ 3 = 3 remainder 2 |
| 7 | 3 ÷ 2 = 1 remainder 1 |
| 8 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 123 and 100 | 12300 |
| 57 and 156 | 2964 |
| 46 and 42 | 966 |
| 121 and 49 | 5929 |
| 152 and 32 | 608 |