Least Common Multiple (LCM) of 180 and 81
The least common multiple (LCM) of 180 and 81 is 1620.
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 180 and 81?
First, calculate the GCD of 180 and 81 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 180 ÷ 81 = 2 remainder 18 |
| 2 | 81 ÷ 18 = 4 remainder 9 |
| 3 | 18 ÷ 9 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 92 and 132 | 3036 |
| 178 and 115 | 20470 |
| 45 and 163 | 7335 |
| 102 and 166 | 8466 |
| 31 and 18 | 558 |