Least Common Multiple (LCM) of 172 and 120
The least common multiple (LCM) of 172 and 120 is 5160.
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 172 and 120?
First, calculate the GCD of 172 and 120 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 172 ÷ 120 = 1 remainder 52 |
| 2 | 120 ÷ 52 = 2 remainder 16 |
| 3 | 52 ÷ 16 = 3 remainder 4 |
| 4 | 16 ÷ 4 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 80 and 38 | 1520 |
| 122 and 168 | 10248 |
| 171 and 174 | 9918 |
| 141 and 79 | 11139 |
| 130 and 146 | 9490 |