Least Common Multiple (LCM) of 45 and 129
The least common multiple (LCM) of 45 and 129 is 1935.
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 45 and 129?
First, calculate the GCD of 45 and 129 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 45 ÷ 129 = 0 remainder 45 |
| 2 | 129 ÷ 45 = 2 remainder 39 |
| 3 | 45 ÷ 39 = 1 remainder 6 |
| 4 | 39 ÷ 6 = 6 remainder 3 |
| 5 | 6 ÷ 3 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 42 and 111 | 1554 |
| 96 and 75 | 2400 |
| 65 and 130 | 130 |
| 198 and 191 | 37818 |
| 78 and 66 | 858 |