Least Common Multiple (LCM) of 68 and 115
The least common multiple (LCM) of 68 and 115 is 7820.
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 68 and 115?
First, calculate the GCD of 68 and 115 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 68 ÷ 115 = 0 remainder 68 |
| 2 | 115 ÷ 68 = 1 remainder 47 |
| 3 | 68 ÷ 47 = 1 remainder 21 |
| 4 | 47 ÷ 21 = 2 remainder 5 |
| 5 | 21 ÷ 5 = 4 remainder 1 |
| 6 | 5 ÷ 1 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 186 and 16 | 1488 |
| 11 and 65 | 715 |
| 17 and 120 | 2040 |
| 96 and 19 | 1824 |
| 83 and 52 | 4316 |