Least Common Multiple (LCM) of 69 and 140
The least common multiple (LCM) of 69 and 140 is 9660.
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 69 and 140?
First, calculate the GCD of 69 and 140 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 69 ÷ 140 = 0 remainder 69 |
| 2 | 140 ÷ 69 = 2 remainder 2 |
| 3 | 69 ÷ 2 = 34 remainder 1 |
| 4 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 28 and 115 | 3220 |
| 47 and 103 | 4841 |
| 128 and 125 | 16000 |
| 78 and 162 | 2106 |
| 72 and 78 | 936 |