Least Common Multiple (LCM) of 161 and 31
The least common multiple (LCM) of 161 and 31 is 4991.
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 161 and 31?
First, calculate the GCD of 161 and 31 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 161 ÷ 31 = 5 remainder 6 |
| 2 | 31 ÷ 6 = 5 remainder 1 |
| 3 | 6 ÷ 1 = 6 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 186 and 24 | 744 |
| 112 and 104 | 1456 |
| 45 and 188 | 8460 |
| 83 and 130 | 10790 |
| 145 and 47 | 6815 |