Least Common Multiple (LCM) of 171 and 89
The least common multiple (LCM) of 171 and 89 is 15219.
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 171 and 89?
First, calculate the GCD of 171 and 89 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 171 ÷ 89 = 1 remainder 82 |
| 2 | 89 ÷ 82 = 1 remainder 7 |
| 3 | 82 ÷ 7 = 11 remainder 5 |
| 4 | 7 ÷ 5 = 1 remainder 2 |
| 5 | 5 ÷ 2 = 2 remainder 1 |
| 6 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 102 and 178 | 9078 |
| 131 and 155 | 20305 |
| 58 and 40 | 1160 |
| 121 and 123 | 14883 |
| 20 and 21 | 420 |