Least Common Multiple (LCM) of 30 and 117
The least common multiple (LCM) of 30 and 117 is 1170.
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 117?
First, calculate the GCD of 30 and 117 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 30 ÷ 117 = 0 remainder 30 |
| 2 | 117 ÷ 30 = 3 remainder 27 |
| 3 | 30 ÷ 27 = 1 remainder 3 |
| 4 | 27 ÷ 3 = 9 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 19 and 114 | 114 |
| 145 and 113 | 16385 |
| 78 and 180 | 2340 |
| 195 and 31 | 6045 |
| 198 and 20 | 1980 |