Least Common Multiple (LCM) of 172 and 81
The least common multiple (LCM) of 172 and 81 is 13932.
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 172 and 81?
First, calculate the GCD of 172 and 81 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 172 ÷ 81 = 2 remainder 10 |
| 2 | 81 ÷ 10 = 8 remainder 1 |
| 3 | 10 ÷ 1 = 10 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 109 and 50 | 5450 |
| 183 and 90 | 5490 |
| 169 and 107 | 18083 |
| 149 and 168 | 25032 |
| 149 and 130 | 19370 |