Least Common Multiple (LCM) of 71 and 161
The least common multiple (LCM) of 71 and 161 is 11431.
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 71 and 161?
First, calculate the GCD of 71 and 161 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 71 ÷ 161 = 0 remainder 71 |
| 2 | 161 ÷ 71 = 2 remainder 19 |
| 3 | 71 ÷ 19 = 3 remainder 14 |
| 4 | 19 ÷ 14 = 1 remainder 5 |
| 5 | 14 ÷ 5 = 2 remainder 4 |
| 6 | 5 ÷ 4 = 1 remainder 1 |
| 7 | 4 ÷ 1 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 119 and 97 | 11543 |
| 161 and 99 | 15939 |
| 70 and 159 | 11130 |
| 136 and 25 | 3400 |
| 157 and 189 | 29673 |