Least Common Multiple (LCM) of 42 and 131
The least common multiple (LCM) of 42 and 131 is 5502.
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 131?
First, calculate the GCD of 42 and 131 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 42 ÷ 131 = 0 remainder 42 |
| 2 | 131 ÷ 42 = 3 remainder 5 |
| 3 | 42 ÷ 5 = 8 remainder 2 |
| 4 | 5 ÷ 2 = 2 remainder 1 |
| 5 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 124 and 54 | 3348 |
| 133 and 87 | 11571 |
| 111 and 127 | 14097 |
| 10 and 105 | 210 |
| 139 and 139 | 139 |