Least Common Multiple (LCM) of 81 and 117
The least common multiple (LCM) of 81 and 117 is 1053.
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 81 and 117?
First, calculate the GCD of 81 and 117 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 81 ÷ 117 = 0 remainder 81 |
| 2 | 117 ÷ 81 = 1 remainder 36 |
| 3 | 81 ÷ 36 = 2 remainder 9 |
| 4 | 36 ÷ 9 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 60 and 153 | 3060 |
| 170 and 56 | 4760 |
| 28 and 120 | 840 |
| 36 and 67 | 2412 |
| 56 and 47 | 2632 |