Least Common Multiple (LCM) of 189 and 43
The least common multiple (LCM) of 189 and 43 is 8127.
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 189 and 43?
First, calculate the GCD of 189 and 43 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 189 ÷ 43 = 4 remainder 17 |
| 2 | 43 ÷ 17 = 2 remainder 9 |
| 3 | 17 ÷ 9 = 1 remainder 8 |
| 4 | 9 ÷ 8 = 1 remainder 1 |
| 5 | 8 ÷ 1 = 8 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 181 and 120 | 21720 |
| 156 and 110 | 8580 |
| 174 and 31 | 5394 |
| 38 and 63 | 2394 |
| 158 and 87 | 13746 |