Least Common Multiple (LCM) of 43 and 87
The least common multiple (LCM) of 43 and 87 is 3741.
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 87?
First, calculate the GCD of 43 and 87 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 43 ÷ 87 = 0 remainder 43 |
| 2 | 87 ÷ 43 = 2 remainder 1 |
| 3 | 43 ÷ 1 = 43 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 20 and 168 | 840 |
| 163 and 188 | 30644 |
| 78 and 181 | 14118 |
| 122 and 122 | 122 |
| 105 and 170 | 3570 |