Least Common Multiple (LCM) of 105 and 57
The least common multiple (LCM) of 105 and 57 is 1995.
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 105 and 57?
First, calculate the GCD of 105 and 57 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 105 ÷ 57 = 1 remainder 48 |
| 2 | 57 ÷ 48 = 1 remainder 9 |
| 3 | 48 ÷ 9 = 5 remainder 3 |
| 4 | 9 ÷ 3 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 123 and 125 | 15375 |
| 124 and 165 | 20460 |
| 195 and 71 | 13845 |
| 29 and 131 | 3799 |
| 189 and 20 | 3780 |