Least Common Multiple (LCM) of 72 and 165
The least common multiple (LCM) of 72 and 165 is 3960.
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 72 and 165?
First, calculate the GCD of 72 and 165 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 72 ÷ 165 = 0 remainder 72 |
| 2 | 165 ÷ 72 = 2 remainder 21 |
| 3 | 72 ÷ 21 = 3 remainder 9 |
| 4 | 21 ÷ 9 = 2 remainder 3 |
| 5 | 9 ÷ 3 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 148 and 54 | 3996 |
| 118 and 80 | 4720 |
| 157 and 22 | 3454 |
| 42 and 71 | 2982 |
| 164 and 168 | 6888 |