Least Common Multiple (LCM) of 155 and 55
The least common multiple (LCM) of 155 and 55 is 1705.
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 155 and 55?
First, calculate the GCD of 155 and 55 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 155 ÷ 55 = 2 remainder 45 |
| 2 | 55 ÷ 45 = 1 remainder 10 |
| 3 | 45 ÷ 10 = 4 remainder 5 |
| 4 | 10 ÷ 5 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 124 and 17 | 2108 |
| 45 and 111 | 1665 |
| 138 and 169 | 23322 |
| 54 and 34 | 918 |
| 184 and 185 | 34040 |