Least Common Multiple (LCM) of 18 and 195
The least common multiple (LCM) of 18 and 195 is 1170.
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 195?
First, calculate the GCD of 18 and 195 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 18 ÷ 195 = 0 remainder 18 |
| 2 | 195 ÷ 18 = 10 remainder 15 |
| 3 | 18 ÷ 15 = 1 remainder 3 |
| 4 | 15 ÷ 3 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 180 and 74 | 6660 |
| 42 and 136 | 2856 |
| 171 and 91 | 15561 |
| 43 and 71 | 3053 |
| 136 and 79 | 10744 |