Least Common Multiple (LCM) of 197 and 123
The least common multiple (LCM) of 197 and 123 is 24231.
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 197 and 123?
First, calculate the GCD of 197 and 123 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 197 ÷ 123 = 1 remainder 74 |
| 2 | 123 ÷ 74 = 1 remainder 49 |
| 3 | 74 ÷ 49 = 1 remainder 25 |
| 4 | 49 ÷ 25 = 1 remainder 24 |
| 5 | 25 ÷ 24 = 1 remainder 1 |
| 6 | 24 ÷ 1 = 24 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 137 and 145 | 19865 |
| 65 and 64 | 4160 |
| 125 and 191 | 23875 |
| 100 and 24 | 600 |
| 74 and 99 | 7326 |