Least Common Multiple (LCM) of 72 and 51
The least common multiple (LCM) of 72 and 51 is 1224.
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 51?
First, calculate the GCD of 72 and 51 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 72 ÷ 51 = 1 remainder 21 |
| 2 | 51 ÷ 21 = 2 remainder 9 |
| 3 | 21 ÷ 9 = 2 remainder 3 |
| 4 | 9 ÷ 3 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 119 and 173 | 20587 |
| 110 and 186 | 10230 |
| 28 and 198 | 2772 |
| 21 and 93 | 651 |
| 85 and 40 | 680 |