Least Common Multiple (LCM) of 81 and 159
The least common multiple (LCM) of 81 and 159 is 4293.
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 159?
First, calculate the GCD of 81 and 159 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 81 ÷ 159 = 0 remainder 81 |
| 2 | 159 ÷ 81 = 1 remainder 78 |
| 3 | 81 ÷ 78 = 1 remainder 3 |
| 4 | 78 ÷ 3 = 26 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 75 and 139 | 10425 |
| 13 and 36 | 468 |
| 128 and 184 | 2944 |
| 169 and 75 | 12675 |
| 123 and 155 | 19065 |