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 |
|---|---|
| 48 and 22 | 528 |
| 134 and 17 | 2278 |
| 87 and 178 | 15486 |
| 144 and 124 | 4464 |
| 182 and 171 | 31122 |