Least Common Multiple (LCM) of 56 and 189
The least common multiple (LCM) of 56 and 189 is 1512.
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 56 and 189?
First, calculate the GCD of 56 and 189 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 56 ÷ 189 = 0 remainder 56 |
| 2 | 189 ÷ 56 = 3 remainder 21 |
| 3 | 56 ÷ 21 = 2 remainder 14 |
| 4 | 21 ÷ 14 = 1 remainder 7 |
| 5 | 14 ÷ 7 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 140 and 144 | 5040 |
| 152 and 105 | 15960 |
| 114 and 73 | 8322 |
| 138 and 102 | 2346 |
| 46 and 161 | 322 |