Least Common Multiple (LCM) of 18 and 64
The least common multiple (LCM) of 18 and 64 is 576.
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 18 and 64?
First, calculate the GCD of 18 and 64 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 18 ÷ 64 = 0 remainder 18 |
| 2 | 64 ÷ 18 = 3 remainder 10 |
| 3 | 18 ÷ 10 = 1 remainder 8 |
| 4 | 10 ÷ 8 = 1 remainder 2 |
| 5 | 8 ÷ 2 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 55 and 118 | 6490 |
| 160 and 19 | 3040 |
| 66 and 158 | 5214 |
| 189 and 90 | 1890 |
| 188 and 17 | 3196 |