Least Common Multiple (LCM) of 84 and 155
The least common multiple (LCM) of 84 and 155 is 13020.
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 84 and 155?
First, calculate the GCD of 84 and 155 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 84 ÷ 155 = 0 remainder 84 |
| 2 | 155 ÷ 84 = 1 remainder 71 |
| 3 | 84 ÷ 71 = 1 remainder 13 |
| 4 | 71 ÷ 13 = 5 remainder 6 |
| 5 | 13 ÷ 6 = 2 remainder 1 |
| 6 | 6 ÷ 1 = 6 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 97 and 174 | 16878 |
| 142 and 45 | 6390 |
| 173 and 191 | 33043 |
| 41 and 49 | 2009 |
| 192 and 46 | 4416 |