Least Common Multiple (LCM) of 13 and 45
The least common multiple (LCM) of 13 and 45 is 585.
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 13 and 45?
First, calculate the GCD of 13 and 45 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 13 ÷ 45 = 0 remainder 13 |
| 2 | 45 ÷ 13 = 3 remainder 6 |
| 3 | 13 ÷ 6 = 2 remainder 1 |
| 4 | 6 ÷ 1 = 6 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 137 and 180 | 24660 |
| 114 and 157 | 17898 |
| 66 and 61 | 4026 |
| 61 and 95 | 5795 |
| 124 and 59 | 7316 |