Least Common Multiple (LCM) of 80 and 61
The least common multiple (LCM) of 80 and 61 is 4880.
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 80 and 61?
First, calculate the GCD of 80 and 61 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 80 ÷ 61 = 1 remainder 19 |
| 2 | 61 ÷ 19 = 3 remainder 4 |
| 3 | 19 ÷ 4 = 4 remainder 3 |
| 4 | 4 ÷ 3 = 1 remainder 1 |
| 5 | 3 ÷ 1 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 135 and 122 | 16470 |
| 153 and 87 | 4437 |
| 85 and 190 | 3230 |
| 194 and 186 | 18042 |
| 80 and 168 | 1680 |