Least Common Multiple (LCM) of 72 and 89
The least common multiple (LCM) of 72 and 89 is 6408.
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 89?
First, calculate the GCD of 72 and 89 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 72 ÷ 89 = 0 remainder 72 |
| 2 | 89 ÷ 72 = 1 remainder 17 |
| 3 | 72 ÷ 17 = 4 remainder 4 |
| 4 | 17 ÷ 4 = 4 remainder 1 |
| 5 | 4 ÷ 1 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 157 and 76 | 11932 |
| 180 and 17 | 3060 |
| 42 and 176 | 3696 |
| 197 and 25 | 4925 |
| 28 and 47 | 1316 |