Least Common Multiple (LCM) of 99 and 155
The least common multiple (LCM) of 99 and 155 is 15345.
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 155?
First, calculate the GCD of 99 and 155 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 99 ÷ 155 = 0 remainder 99 |
| 2 | 155 ÷ 99 = 1 remainder 56 |
| 3 | 99 ÷ 56 = 1 remainder 43 |
| 4 | 56 ÷ 43 = 1 remainder 13 |
| 5 | 43 ÷ 13 = 3 remainder 4 |
| 6 | 13 ÷ 4 = 3 remainder 1 |
| 7 | 4 ÷ 1 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 168 and 39 | 2184 |
| 196 and 200 | 9800 |
| 158 and 147 | 23226 |
| 86 and 117 | 10062 |
| 163 and 77 | 12551 |