Least Common Multiple (LCM) of 195 and 109
The least common multiple (LCM) of 195 and 109 is 21255.
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 195 and 109?
First, calculate the GCD of 195 and 109 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 195 ÷ 109 = 1 remainder 86 |
| 2 | 109 ÷ 86 = 1 remainder 23 |
| 3 | 86 ÷ 23 = 3 remainder 17 |
| 4 | 23 ÷ 17 = 1 remainder 6 |
| 5 | 17 ÷ 6 = 2 remainder 5 |
| 6 | 6 ÷ 5 = 1 remainder 1 |
| 7 | 5 ÷ 1 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 39 and 72 | 936 |
| 40 and 195 | 1560 |
| 161 and 186 | 29946 |
| 90 and 73 | 6570 |
| 133 and 147 | 2793 |