Least Common Multiple (LCM) of 42 and 151
The least common multiple (LCM) of 42 and 151 is 6342.
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 151?
First, calculate the GCD of 42 and 151 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 42 ÷ 151 = 0 remainder 42 |
| 2 | 151 ÷ 42 = 3 remainder 25 |
| 3 | 42 ÷ 25 = 1 remainder 17 |
| 4 | 25 ÷ 17 = 1 remainder 8 |
| 5 | 17 ÷ 8 = 2 remainder 1 |
| 6 | 8 ÷ 1 = 8 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 78 and 97 | 7566 |
| 97 and 189 | 18333 |
| 45 and 81 | 405 |
| 88 and 41 | 3608 |
| 147 and 158 | 23226 |