Least Common Multiple (LCM) of 27 and 23
The least common multiple (LCM) of 27 and 23 is 621.
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 27 and 23?
First, calculate the GCD of 27 and 23 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 27 ÷ 23 = 1 remainder 4 |
| 2 | 23 ÷ 4 = 5 remainder 3 |
| 3 | 4 ÷ 3 = 1 remainder 1 |
| 4 | 3 ÷ 1 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 175 and 54 | 9450 |
| 61 and 40 | 2440 |
| 155 and 128 | 19840 |
| 187 and 104 | 19448 |
| 28 and 171 | 4788 |