Least Common Multiple (LCM) of 102 and 40
The least common multiple (LCM) of 102 and 40 is 2040.
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 102 and 40?
First, calculate the GCD of 102 and 40 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 102 ÷ 40 = 2 remainder 22 |
| 2 | 40 ÷ 22 = 1 remainder 18 |
| 3 | 22 ÷ 18 = 1 remainder 4 |
| 4 | 18 ÷ 4 = 4 remainder 2 |
| 5 | 4 ÷ 2 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 43 and 42 | 1806 |
| 122 and 154 | 9394 |
| 130 and 184 | 11960 |
| 144 and 81 | 1296 |
| 74 and 41 | 3034 |