Least Common Multiple (LCM) of 128 and 89
The least common multiple (LCM) of 128 and 89 is 11392.
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 128 and 89?
First, calculate the GCD of 128 and 89 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 128 ÷ 89 = 1 remainder 39 |
| 2 | 89 ÷ 39 = 2 remainder 11 |
| 3 | 39 ÷ 11 = 3 remainder 6 |
| 4 | 11 ÷ 6 = 1 remainder 5 |
| 5 | 6 ÷ 5 = 1 remainder 1 |
| 6 | 5 ÷ 1 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 145 and 60 | 1740 |
| 18 and 90 | 90 |
| 147 and 121 | 17787 |
| 188 and 62 | 5828 |
| 94 and 47 | 94 |