Least Common Multiple (LCM) of 57 and 87
The least common multiple (LCM) of 57 and 87 is 1653.
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 57 and 87?
First, calculate the GCD of 57 and 87 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 57 ÷ 87 = 0 remainder 57 |
| 2 | 87 ÷ 57 = 1 remainder 30 |
| 3 | 57 ÷ 30 = 1 remainder 27 |
| 4 | 30 ÷ 27 = 1 remainder 3 |
| 5 | 27 ÷ 3 = 9 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 105 and 182 | 2730 |
| 16 and 49 | 784 |
| 34 and 122 | 2074 |
| 181 and 197 | 35657 |
| 188 and 132 | 6204 |