Least Common Multiple (LCM) of 124 and 78
The least common multiple (LCM) of 124 and 78 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 124 and 78?
First, calculate the GCD of 124 and 78 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 124 ÷ 78 = 1 remainder 46 |
| 2 | 78 ÷ 46 = 1 remainder 32 |
| 3 | 46 ÷ 32 = 1 remainder 14 |
| 4 | 32 ÷ 14 = 2 remainder 4 |
| 5 | 14 ÷ 4 = 3 remainder 2 |
| 6 | 4 ÷ 2 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 109 and 145 | 15805 |
| 95 and 93 | 8835 |
| 110 and 65 | 1430 |
| 26 and 124 | 1612 |
| 17 and 146 | 2482 |