Least Common Multiple (LCM) of 15 and 158
The least common multiple (LCM) of 15 and 158 is 2370.
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 15 and 158?
First, calculate the GCD of 15 and 158 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 15 ÷ 158 = 0 remainder 15 |
| 2 | 158 ÷ 15 = 10 remainder 8 |
| 3 | 15 ÷ 8 = 1 remainder 7 |
| 4 | 8 ÷ 7 = 1 remainder 1 |
| 5 | 7 ÷ 1 = 7 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 108 and 120 | 1080 |
| 172 and 181 | 31132 |
| 54 and 19 | 1026 |
| 155 and 18 | 2790 |
| 103 and 172 | 17716 |