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 |
|---|---|
| 193 and 120 | 23160 |
| 137 and 154 | 21098 |
| 113 and 191 | 21583 |
| 196 and 195 | 38220 |
| 76 and 145 | 11020 |