Least Common Multiple (LCM) of 161 and 198
The least common multiple (LCM) of 161 and 198 is 31878.
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 161 and 198?
First, calculate the GCD of 161 and 198 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 161 ÷ 198 = 0 remainder 161 |
| 2 | 198 ÷ 161 = 1 remainder 37 |
| 3 | 161 ÷ 37 = 4 remainder 13 |
| 4 | 37 ÷ 13 = 2 remainder 11 |
| 5 | 13 ÷ 11 = 1 remainder 2 |
| 6 | 11 ÷ 2 = 5 remainder 1 |
| 7 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 33 and 189 | 2079 |
| 29 and 156 | 4524 |
| 28 and 108 | 756 |
| 97 and 27 | 2619 |
| 166 and 15 | 2490 |