Least Common Multiple (LCM) of 87 and 128
The least common multiple (LCM) of 87 and 128 is 11136.
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 128?
First, calculate the GCD of 87 and 128 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 87 ÷ 128 = 0 remainder 87 |
| 2 | 128 ÷ 87 = 1 remainder 41 |
| 3 | 87 ÷ 41 = 2 remainder 5 |
| 4 | 41 ÷ 5 = 8 remainder 1 |
| 5 | 5 ÷ 1 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 124 and 132 | 4092 |
| 144 and 158 | 11376 |
| 20 and 67 | 1340 |
| 142 and 153 | 21726 |
| 150 and 91 | 13650 |