Least Common Multiple (LCM) of 47 and 80
The least common multiple (LCM) of 47 and 80 is 3760.
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 80?
First, calculate the GCD of 47 and 80 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 47 ÷ 80 = 0 remainder 47 |
| 2 | 80 ÷ 47 = 1 remainder 33 |
| 3 | 47 ÷ 33 = 1 remainder 14 |
| 4 | 33 ÷ 14 = 2 remainder 5 |
| 5 | 14 ÷ 5 = 2 remainder 4 |
| 6 | 5 ÷ 4 = 1 remainder 1 |
| 7 | 4 ÷ 1 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 131 and 155 | 20305 |
| 52 and 14 | 364 |
| 180 and 172 | 7740 |
| 64 and 165 | 10560 |
| 183 and 39 | 2379 |