Least Common Multiple (LCM) of 128 and 63
The least common multiple (LCM) of 128 and 63 is 8064.
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 63?
First, calculate the GCD of 128 and 63 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 128 ÷ 63 = 2 remainder 2 |
| 2 | 63 ÷ 2 = 31 remainder 1 |
| 3 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 60 and 175 | 2100 |
| 105 and 180 | 1260 |
| 144 and 34 | 2448 |
| 123 and 21 | 861 |
| 188 and 42 | 3948 |