Least Common Multiple (LCM) of 99 and 171
The least common multiple (LCM) of 99 and 171 is 1881.
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 99 and 171?
First, calculate the GCD of 99 and 171 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 99 ÷ 171 = 0 remainder 99 |
| 2 | 171 ÷ 99 = 1 remainder 72 |
| 3 | 99 ÷ 72 = 1 remainder 27 |
| 4 | 72 ÷ 27 = 2 remainder 18 |
| 5 | 27 ÷ 18 = 1 remainder 9 |
| 6 | 18 ÷ 9 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 28 and 153 | 4284 |
| 153 and 113 | 17289 |
| 47 and 91 | 4277 |
| 190 and 61 | 11590 |
| 138 and 46 | 138 |