Least Common Multiple (LCM) of 20 and 149
The least common multiple (LCM) of 20 and 149 is 2980.
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 149?
First, calculate the GCD of 20 and 149 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 20 ÷ 149 = 0 remainder 20 |
| 2 | 149 ÷ 20 = 7 remainder 9 |
| 3 | 20 ÷ 9 = 2 remainder 2 |
| 4 | 9 ÷ 2 = 4 remainder 1 |
| 5 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 200 and 33 | 6600 |
| 66 and 122 | 4026 |
| 81 and 23 | 1863 |
| 32 and 42 | 672 |
| 103 and 72 | 7416 |