Least Common Multiple (LCM) of 42 and 82
The least common multiple (LCM) of 42 and 82 is 1722.
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 42 and 82?
First, calculate the GCD of 42 and 82 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 42 ÷ 82 = 0 remainder 42 |
| 2 | 82 ÷ 42 = 1 remainder 40 |
| 3 | 42 ÷ 40 = 1 remainder 2 |
| 4 | 40 ÷ 2 = 20 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 149 and 19 | 2831 |
| 83 and 39 | 3237 |
| 149 and 159 | 23691 |
| 91 and 71 | 6461 |
| 45 and 144 | 720 |