Least Common Multiple (LCM) of 45 and 155
The least common multiple (LCM) of 45 and 155 is 1395.
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 45 and 155?
First, calculate the GCD of 45 and 155 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 45 ÷ 155 = 0 remainder 45 |
| 2 | 155 ÷ 45 = 3 remainder 20 |
| 3 | 45 ÷ 20 = 2 remainder 5 |
| 4 | 20 ÷ 5 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 169 and 28 | 4732 |
| 134 and 195 | 26130 |
| 114 and 165 | 6270 |
| 161 and 13 | 2093 |
| 177 and 47 | 8319 |