Least Common Multiple (LCM) of 181 and 115
The least common multiple (LCM) of 181 and 115 is 20815.
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 181 and 115?
First, calculate the GCD of 181 and 115 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 181 ÷ 115 = 1 remainder 66 |
| 2 | 115 ÷ 66 = 1 remainder 49 |
| 3 | 66 ÷ 49 = 1 remainder 17 |
| 4 | 49 ÷ 17 = 2 remainder 15 |
| 5 | 17 ÷ 15 = 1 remainder 2 |
| 6 | 15 ÷ 2 = 7 remainder 1 |
| 7 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 63 and 31 | 1953 |
| 156 and 181 | 28236 |
| 137 and 140 | 19180 |
| 188 and 177 | 33276 |
| 178 and 23 | 4094 |