Least Common Multiple (LCM) of 15 and 68
The least common multiple (LCM) of 15 and 68 is 1020.
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 68?
First, calculate the GCD of 15 and 68 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 15 ÷ 68 = 0 remainder 15 |
| 2 | 68 ÷ 15 = 4 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 |
|---|---|
| 158 and 101 | 15958 |
| 101 and 78 | 7878 |
| 113 and 145 | 16385 |
| 82 and 118 | 4838 |
| 176 and 111 | 19536 |