Least Common Multiple (LCM) of 20 and 127
The least common multiple (LCM) of 20 and 127 is 2540.
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 20 and 127?
First, calculate the GCD of 20 and 127 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 20 ÷ 127 = 0 remainder 20 |
| 2 | 127 ÷ 20 = 6 remainder 7 |
| 3 | 20 ÷ 7 = 2 remainder 6 |
| 4 | 7 ÷ 6 = 1 remainder 1 |
| 5 | 6 ÷ 1 = 6 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 108 and 144 | 432 |
| 31 and 33 | 1023 |
| 171 and 154 | 26334 |
| 118 and 46 | 2714 |
| 90 and 116 | 5220 |