Least Common Multiple (LCM) of 81 and 192
The least common multiple (LCM) of 81 and 192 is 5184.
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 192?
First, calculate the GCD of 81 and 192 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 81 ÷ 192 = 0 remainder 81 |
| 2 | 192 ÷ 81 = 2 remainder 30 |
| 3 | 81 ÷ 30 = 2 remainder 21 |
| 4 | 30 ÷ 21 = 1 remainder 9 |
| 5 | 21 ÷ 9 = 2 remainder 3 |
| 6 | 9 ÷ 3 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 126 and 38 | 2394 |
| 63 and 73 | 4599 |
| 86 and 59 | 5074 |
| 135 and 130 | 3510 |
| 40 and 71 | 2840 |