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 |
|---|---|
| 176 and 122 | 10736 |
| 70 and 31 | 2170 |
| 89 and 15 | 1335 |
| 151 and 38 | 5738 |
| 162 and 67 | 10854 |