Least Common Multiple (LCM) of 109 and 69
The least common multiple (LCM) of 109 and 69 is 7521.
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 109 and 69?
First, calculate the GCD of 109 and 69 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 109 ÷ 69 = 1 remainder 40 |
| 2 | 69 ÷ 40 = 1 remainder 29 |
| 3 | 40 ÷ 29 = 1 remainder 11 |
| 4 | 29 ÷ 11 = 2 remainder 7 |
| 5 | 11 ÷ 7 = 1 remainder 4 |
| 6 | 7 ÷ 4 = 1 remainder 3 |
| 7 | 4 ÷ 3 = 1 remainder 1 |
| 8 | 3 ÷ 1 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 109 and 159 | 17331 |
| 142 and 20 | 1420 |
| 127 and 134 | 17018 |
| 173 and 11 | 1903 |
| 129 and 54 | 2322 |