Least Common Multiple (LCM) of 105 and 63
The least common multiple (LCM) of 105 and 63 is 315.
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 63?
First, calculate the GCD of 105 and 63 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 105 ÷ 63 = 1 remainder 42 |
| 2 | 63 ÷ 42 = 1 remainder 21 |
| 3 | 42 ÷ 21 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 47 and 64 | 3008 |
| 95 and 176 | 16720 |
| 29 and 81 | 2349 |
| 37 and 85 | 3145 |
| 15 and 24 | 120 |