Least Common Multiple (LCM) of 178 and 42
The least common multiple (LCM) of 178 and 42 is 3738.
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 178 and 42?
First, calculate the GCD of 178 and 42 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 178 ÷ 42 = 4 remainder 10 |
| 2 | 42 ÷ 10 = 4 remainder 2 |
| 3 | 10 ÷ 2 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 118 and 110 | 6490 |
| 156 and 98 | 7644 |
| 55 and 195 | 2145 |
| 14 and 55 | 770 |
| 168 and 18 | 504 |