Least Common Multiple (LCM) of 20 and 68
The least common multiple (LCM) of 20 and 68 is 340.
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 20 and 68?
First, calculate the GCD of 20 and 68 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 20 ÷ 68 = 0 remainder 20 |
| 2 | 68 ÷ 20 = 3 remainder 8 |
| 3 | 20 ÷ 8 = 2 remainder 4 |
| 4 | 8 ÷ 4 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 73 and 122 | 8906 |
| 17 and 166 | 2822 |
| 138 and 38 | 2622 |
| 192 and 36 | 576 |
| 68 and 183 | 12444 |