Least Common Multiple (LCM) of 43 and 170
The least common multiple (LCM) of 43 and 170 is 7310.
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 43 and 170?
First, calculate the GCD of 43 and 170 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 43 ÷ 170 = 0 remainder 43 |
| 2 | 170 ÷ 43 = 3 remainder 41 |
| 3 | 43 ÷ 41 = 1 remainder 2 |
| 4 | 41 ÷ 2 = 20 remainder 1 |
| 5 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 136 and 60 | 2040 |
| 15 and 85 | 255 |
| 30 and 39 | 390 |
| 146 and 139 | 20294 |
| 11 and 163 | 1793 |