Least Common Multiple (LCM) of 87 and 135
The least common multiple (LCM) of 87 and 135 is 3915.
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 87 and 135?
First, calculate the GCD of 87 and 135 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 87 ÷ 135 = 0 remainder 87 |
| 2 | 135 ÷ 87 = 1 remainder 48 |
| 3 | 87 ÷ 48 = 1 remainder 39 |
| 4 | 48 ÷ 39 = 1 remainder 9 |
| 5 | 39 ÷ 9 = 4 remainder 3 |
| 6 | 9 ÷ 3 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 42 and 121 | 5082 |
| 164 and 85 | 13940 |
| 73 and 69 | 5037 |
| 142 and 156 | 11076 |
| 91 and 181 | 16471 |