Least Common Multiple (LCM) of 123 and 49
The least common multiple (LCM) of 123 and 49 is 6027.
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 49?
First, calculate the GCD of 123 and 49 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 123 ÷ 49 = 2 remainder 25 |
| 2 | 49 ÷ 25 = 1 remainder 24 |
| 3 | 25 ÷ 24 = 1 remainder 1 |
| 4 | 24 ÷ 1 = 24 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 36 and 160 | 1440 |
| 16 and 150 | 1200 |
| 145 and 189 | 27405 |
| 61 and 161 | 9821 |
| 185 and 19 | 3515 |