Least Common Multiple (LCM) of 99 and 172
The least common multiple (LCM) of 99 and 172 is 17028.
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 172?
First, calculate the GCD of 99 and 172 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 99 ÷ 172 = 0 remainder 99 |
| 2 | 172 ÷ 99 = 1 remainder 73 |
| 3 | 99 ÷ 73 = 1 remainder 26 |
| 4 | 73 ÷ 26 = 2 remainder 21 |
| 5 | 26 ÷ 21 = 1 remainder 5 |
| 6 | 21 ÷ 5 = 4 remainder 1 |
| 7 | 5 ÷ 1 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 111 and 78 | 2886 |
| 101 and 170 | 17170 |
| 109 and 69 | 7521 |
| 49 and 156 | 7644 |
| 164 and 129 | 21156 |