Least Common Multiple (LCM) of 128 and 17
The least common multiple (LCM) of 128 and 17 is 2176.
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 17?
First, calculate the GCD of 128 and 17 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 128 ÷ 17 = 7 remainder 9 |
| 2 | 17 ÷ 9 = 1 remainder 8 |
| 3 | 9 ÷ 8 = 1 remainder 1 |
| 4 | 8 ÷ 1 = 8 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 15 and 126 | 630 |
| 177 and 199 | 35223 |
| 135 and 105 | 945 |
| 75 and 115 | 1725 |
| 186 and 81 | 5022 |