Least Common Multiple (LCM) of 43 and 83
The least common multiple (LCM) of 43 and 83 is 3569.
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 83?
First, calculate the GCD of 43 and 83 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 43 ÷ 83 = 0 remainder 43 |
| 2 | 83 ÷ 43 = 1 remainder 40 |
| 3 | 43 ÷ 40 = 1 remainder 3 |
| 4 | 40 ÷ 3 = 13 remainder 1 |
| 5 | 3 ÷ 1 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 78 and 189 | 4914 |
| 65 and 166 | 10790 |
| 189 and 171 | 3591 |
| 126 and 139 | 17514 |
| 87 and 160 | 13920 |