Least Common Multiple (LCM) of 42 and 190
The least common multiple (LCM) of 42 and 190 is 3990.
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 42 and 190?
First, calculate the GCD of 42 and 190 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 42 ÷ 190 = 0 remainder 42 |
| 2 | 190 ÷ 42 = 4 remainder 22 |
| 3 | 42 ÷ 22 = 1 remainder 20 |
| 4 | 22 ÷ 20 = 1 remainder 2 |
| 5 | 20 ÷ 2 = 10 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 165 and 163 | 26895 |
| 20 and 194 | 1940 |
| 18 and 176 | 1584 |
| 172 and 79 | 13588 |
| 155 and 45 | 1395 |