Least Common Multiple (LCM) of 66 and 31
The least common multiple (LCM) of 66 and 31 is 2046.
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 66 and 31?
First, calculate the GCD of 66 and 31 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 66 ÷ 31 = 2 remainder 4 |
| 2 | 31 ÷ 4 = 7 remainder 3 |
| 3 | 4 ÷ 3 = 1 remainder 1 |
| 4 | 3 ÷ 1 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 138 and 38 | 2622 |
| 98 and 137 | 13426 |
| 191 and 72 | 13752 |
| 172 and 69 | 11868 |
| 127 and 78 | 9906 |