Least Common Multiple (LCM) of 71 and 43
The least common multiple (LCM) of 71 and 43 is 3053.
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 71 and 43?
First, calculate the GCD of 71 and 43 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 71 ÷ 43 = 1 remainder 28 |
| 2 | 43 ÷ 28 = 1 remainder 15 |
| 3 | 28 ÷ 15 = 1 remainder 13 |
| 4 | 15 ÷ 13 = 1 remainder 2 |
| 5 | 13 ÷ 2 = 6 remainder 1 |
| 6 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 59 and 42 | 2478 |
| 197 and 180 | 35460 |
| 141 and 109 | 15369 |
| 91 and 131 | 11921 |
| 45 and 61 | 2745 |