Least Common Multiple (LCM) of 39 and 28
The least common multiple (LCM) of 39 and 28 is 1092.
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 39 and 28?
First, calculate the GCD of 39 and 28 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 39 ÷ 28 = 1 remainder 11 |
| 2 | 28 ÷ 11 = 2 remainder 6 |
| 3 | 11 ÷ 6 = 1 remainder 5 |
| 4 | 6 ÷ 5 = 1 remainder 1 |
| 5 | 5 ÷ 1 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 112 and 26 | 1456 |
| 64 and 151 | 9664 |
| 73 and 149 | 10877 |
| 172 and 15 | 2580 |
| 30 and 20 | 60 |