Least Common Multiple (LCM) of 42 and 194
The least common multiple (LCM) of 42 and 194 is 4074.
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 194?
First, calculate the GCD of 42 and 194 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 42 ÷ 194 = 0 remainder 42 |
| 2 | 194 ÷ 42 = 4 remainder 26 |
| 3 | 42 ÷ 26 = 1 remainder 16 |
| 4 | 26 ÷ 16 = 1 remainder 10 |
| 5 | 16 ÷ 10 = 1 remainder 6 |
| 6 | 10 ÷ 6 = 1 remainder 4 |
| 7 | 6 ÷ 4 = 1 remainder 2 |
| 8 | 4 ÷ 2 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 141 and 147 | 6909 |
| 19 and 46 | 874 |
| 79 and 195 | 15405 |
| 79 and 20 | 1580 |
| 106 and 189 | 20034 |