Least Common Multiple (LCM) of 170 and 109
The least common multiple (LCM) of 170 and 109 is 18530.
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 170 and 109?
First, calculate the GCD of 170 and 109 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 170 ÷ 109 = 1 remainder 61 |
| 2 | 109 ÷ 61 = 1 remainder 48 |
| 3 | 61 ÷ 48 = 1 remainder 13 |
| 4 | 48 ÷ 13 = 3 remainder 9 |
| 5 | 13 ÷ 9 = 1 remainder 4 |
| 6 | 9 ÷ 4 = 2 remainder 1 |
| 7 | 4 ÷ 1 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 18 and 31 | 558 |
| 35 and 65 | 455 |
| 103 and 162 | 16686 |
| 142 and 25 | 3550 |
| 179 and 14 | 2506 |