Least Common Multiple (LCM) of 47 and 143
The least common multiple (LCM) of 47 and 143 is 6721.
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 143?
First, calculate the GCD of 47 and 143 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 47 ÷ 143 = 0 remainder 47 |
| 2 | 143 ÷ 47 = 3 remainder 2 |
| 3 | 47 ÷ 2 = 23 remainder 1 |
| 4 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 138 and 32 | 2208 |
| 150 and 165 | 1650 |
| 156 and 120 | 1560 |
| 178 and 132 | 11748 |
| 144 and 31 | 4464 |