Least Common Multiple (LCM) of 128 and 19
The least common multiple (LCM) of 128 and 19 is 2432.
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 19?
First, calculate the GCD of 128 and 19 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 128 ÷ 19 = 6 remainder 14 |
| 2 | 19 ÷ 14 = 1 remainder 5 |
| 3 | 14 ÷ 5 = 2 remainder 4 |
| 4 | 5 ÷ 4 = 1 remainder 1 |
| 5 | 4 ÷ 1 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 128 and 154 | 9856 |
| 91 and 106 | 9646 |
| 66 and 158 | 5214 |
| 29 and 175 | 5075 |
| 120 and 166 | 9960 |