Least Common Multiple (LCM) of 85 and 128
The least common multiple (LCM) of 85 and 128 is 10880.
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 85 and 128?
First, calculate the GCD of 85 and 128 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 85 ÷ 128 = 0 remainder 85 |
| 2 | 128 ÷ 85 = 1 remainder 43 |
| 3 | 85 ÷ 43 = 1 remainder 42 |
| 4 | 43 ÷ 42 = 1 remainder 1 |
| 5 | 42 ÷ 1 = 42 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 21 and 122 | 2562 |
| 52 and 188 | 2444 |
| 113 and 20 | 2260 |
| 30 and 112 | 1680 |
| 171 and 115 | 19665 |