Least Common Multiple (LCM) of 40 and 198
The least common multiple (LCM) of 40 and 198 is 3960.
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 40 and 198?
First, calculate the GCD of 40 and 198 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 40 ÷ 198 = 0 remainder 40 |
| 2 | 198 ÷ 40 = 4 remainder 38 |
| 3 | 40 ÷ 38 = 1 remainder 2 |
| 4 | 38 ÷ 2 = 19 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 54 and 110 | 2970 |
| 190 and 55 | 2090 |
| 120 and 45 | 360 |
| 137 and 151 | 20687 |
| 167 and 139 | 23213 |