Least Common Multiple (LCM) of 123 and 131
The least common multiple (LCM) of 123 and 131 is 16113.
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 131?
First, calculate the GCD of 123 and 131 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 123 ÷ 131 = 0 remainder 123 |
| 2 | 131 ÷ 123 = 1 remainder 8 |
| 3 | 123 ÷ 8 = 15 remainder 3 |
| 4 | 8 ÷ 3 = 2 remainder 2 |
| 5 | 3 ÷ 2 = 1 remainder 1 |
| 6 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 142 and 79 | 11218 |
| 18 and 130 | 1170 |
| 104 and 173 | 17992 |
| 100 and 27 | 2700 |
| 161 and 142 | 22862 |