Least Common Multiple (LCM) of 47 and 45
The least common multiple (LCM) of 47 and 45 is 2115.
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 47 and 45?
First, calculate the GCD of 47 and 45 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 47 ÷ 45 = 1 remainder 2 |
| 2 | 45 ÷ 2 = 22 remainder 1 |
| 3 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 164 and 121 | 19844 |
| 111 and 153 | 5661 |
| 169 and 116 | 19604 |
| 153 and 21 | 1071 |
| 47 and 187 | 8789 |