Least Common Multiple (LCM) of 198 and 78
The least common multiple (LCM) of 198 and 78 is 2574.
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 198 and 78?
First, calculate the GCD of 198 and 78 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 198 ÷ 78 = 2 remainder 42 |
| 2 | 78 ÷ 42 = 1 remainder 36 |
| 3 | 42 ÷ 36 = 1 remainder 6 |
| 4 | 36 ÷ 6 = 6 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 72 and 48 | 144 |
| 165 and 172 | 28380 |
| 156 and 124 | 4836 |
| 63 and 167 | 10521 |
| 147 and 66 | 3234 |