Least Common Multiple (LCM) of 81 and 199
The least common multiple (LCM) of 81 and 199 is 16119.
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 81 and 199?
First, calculate the GCD of 81 and 199 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 81 ÷ 199 = 0 remainder 81 |
| 2 | 199 ÷ 81 = 2 remainder 37 |
| 3 | 81 ÷ 37 = 2 remainder 7 |
| 4 | 37 ÷ 7 = 5 remainder 2 |
| 5 | 7 ÷ 2 = 3 remainder 1 |
| 6 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 22 and 13 | 286 |
| 63 and 186 | 3906 |
| 60 and 186 | 1860 |
| 156 and 200 | 7800 |
| 144 and 192 | 576 |