Least Common Multiple (LCM) of 128 and 65
The least common multiple (LCM) of 128 and 65 is 8320.
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 65?
First, calculate the GCD of 128 and 65 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 128 ÷ 65 = 1 remainder 63 |
| 2 | 65 ÷ 63 = 1 remainder 2 |
| 3 | 63 ÷ 2 = 31 remainder 1 |
| 4 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 24 and 14 | 168 |
| 12 and 25 | 300 |
| 46 and 151 | 6946 |
| 139 and 131 | 18209 |
| 195 and 117 | 585 |