Least Common Multiple (LCM) of 140 and 123
The least common multiple (LCM) of 140 and 123 is 17220.
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 140 and 123?
First, calculate the GCD of 140 and 123 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 140 ÷ 123 = 1 remainder 17 |
| 2 | 123 ÷ 17 = 7 remainder 4 |
| 3 | 17 ÷ 4 = 4 remainder 1 |
| 4 | 4 ÷ 1 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 40 and 85 | 680 |
| 191 and 132 | 25212 |
| 186 and 30 | 930 |
| 161 and 25 | 4025 |
| 167 and 71 | 11857 |