Least Common Multiple (LCM) of 42 and 179
The least common multiple (LCM) of 42 and 179 is 7518.
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 179?
First, calculate the GCD of 42 and 179 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 42 ÷ 179 = 0 remainder 42 |
| 2 | 179 ÷ 42 = 4 remainder 11 |
| 3 | 42 ÷ 11 = 3 remainder 9 |
| 4 | 11 ÷ 9 = 1 remainder 2 |
| 5 | 9 ÷ 2 = 4 remainder 1 |
| 6 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 28 and 139 | 3892 |
| 172 and 32 | 1376 |
| 120 and 41 | 4920 |
| 179 and 12 | 2148 |
| 47 and 139 | 6533 |