Least Common Multiple (LCM) of 43 and 63
The least common multiple (LCM) of 43 and 63 is 2709.
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 43 and 63?
First, calculate the GCD of 43 and 63 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 43 ÷ 63 = 0 remainder 43 |
| 2 | 63 ÷ 43 = 1 remainder 20 |
| 3 | 43 ÷ 20 = 2 remainder 3 |
| 4 | 20 ÷ 3 = 6 remainder 2 |
| 5 | 3 ÷ 2 = 1 remainder 1 |
| 6 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 36 and 54 | 108 |
| 114 and 15 | 570 |
| 19 and 150 | 2850 |
| 195 and 195 | 195 |
| 173 and 126 | 21798 |