Least Common Multiple (LCM) of 30 and 65
The least common multiple (LCM) of 30 and 65 is 390.
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 30 and 65?
First, calculate the GCD of 30 and 65 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 30 ÷ 65 = 0 remainder 30 |
| 2 | 65 ÷ 30 = 2 remainder 5 |
| 3 | 30 ÷ 5 = 6 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 55 and 45 | 495 |
| 60 and 22 | 660 |
| 62 and 38 | 1178 |
| 50 and 147 | 7350 |
| 137 and 18 | 2466 |