Least Common Multiple (LCM) of 123 and 163
The least common multiple (LCM) of 123 and 163 is 20049.
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 123 and 163?
First, calculate the GCD of 123 and 163 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 123 ÷ 163 = 0 remainder 123 |
| 2 | 163 ÷ 123 = 1 remainder 40 |
| 3 | 123 ÷ 40 = 3 remainder 3 |
| 4 | 40 ÷ 3 = 13 remainder 1 |
| 5 | 3 ÷ 1 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 147 and 30 | 1470 |
| 168 and 136 | 2856 |
| 190 and 73 | 13870 |
| 66 and 125 | 8250 |
| 138 and 55 | 7590 |