Least Common Multiple (LCM) of 78 and 124
The least common multiple (LCM) of 78 and 124 is 4836.
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 78 and 124?
First, calculate the GCD of 78 and 124 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 78 ÷ 124 = 0 remainder 78 |
| 2 | 124 ÷ 78 = 1 remainder 46 |
| 3 | 78 ÷ 46 = 1 remainder 32 |
| 4 | 46 ÷ 32 = 1 remainder 14 |
| 5 | 32 ÷ 14 = 2 remainder 4 |
| 6 | 14 ÷ 4 = 3 remainder 2 |
| 7 | 4 ÷ 2 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 24 and 100 | 600 |
| 96 and 132 | 1056 |
| 32 and 103 | 3296 |
| 91 and 49 | 637 |
| 95 and 177 | 16815 |