Least Common Multiple (LCM) of 15 and 13
The least common multiple (LCM) of 15 and 13 is 195.
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 13?
First, calculate the GCD of 15 and 13 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 15 ÷ 13 = 1 remainder 2 |
| 2 | 13 ÷ 2 = 6 remainder 1 |
| 3 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 38 and 42 | 798 |
| 184 and 64 | 1472 |
| 16 and 132 | 528 |
| 164 and 62 | 5084 |
| 42 and 112 | 336 |