Least Common Multiple (LCM) of 123 and 130
The least common multiple (LCM) of 123 and 130 is 15990.
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 130?
First, calculate the GCD of 123 and 130 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 123 ÷ 130 = 0 remainder 123 |
| 2 | 130 ÷ 123 = 1 remainder 7 |
| 3 | 123 ÷ 7 = 17 remainder 4 |
| 4 | 7 ÷ 4 = 1 remainder 3 |
| 5 | 4 ÷ 3 = 1 remainder 1 |
| 6 | 3 ÷ 1 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 192 and 76 | 3648 |
| 162 and 45 | 810 |
| 15 and 182 | 2730 |
| 187 and 56 | 10472 |
| 13 and 114 | 1482 |