Least Common Multiple (LCM) of 12 and 56
The least common multiple (LCM) of 12 and 56 is 168.
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 12 and 56?
First, calculate the GCD of 12 and 56 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 12 ÷ 56 = 0 remainder 12 |
| 2 | 56 ÷ 12 = 4 remainder 8 |
| 3 | 12 ÷ 8 = 1 remainder 4 |
| 4 | 8 ÷ 4 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 159 and 64 | 10176 |
| 158 and 143 | 22594 |
| 76 and 87 | 6612 |
| 138 and 142 | 9798 |
| 191 and 15 | 2865 |