Least Common Multiple (LCM) of 20 and 158
The least common multiple (LCM) of 20 and 158 is 1580.
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 158?
First, calculate the GCD of 20 and 158 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 20 ÷ 158 = 0 remainder 20 |
| 2 | 158 ÷ 20 = 7 remainder 18 |
| 3 | 20 ÷ 18 = 1 remainder 2 |
| 4 | 18 ÷ 2 = 9 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 142 and 145 | 20590 |
| 80 and 65 | 1040 |
| 162 and 172 | 13932 |
| 188 and 132 | 6204 |
| 197 and 18 | 3546 |