Least Common Multiple (LCM) of 18 and 57
The least common multiple (LCM) of 18 and 57 is 342.
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 57?
First, calculate the GCD of 18 and 57 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 18 ÷ 57 = 0 remainder 18 |
| 2 | 57 ÷ 18 = 3 remainder 3 |
| 3 | 18 ÷ 3 = 6 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 50 and 61 | 3050 |
| 200 and 36 | 1800 |
| 169 and 83 | 14027 |
| 95 and 127 | 12065 |
| 123 and 193 | 23739 |