Least Common Multiple (LCM) of 161 and 149
The least common multiple (LCM) of 161 and 149 is 23989.
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 149?
First, calculate the GCD of 161 and 149 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 161 ÷ 149 = 1 remainder 12 |
| 2 | 149 ÷ 12 = 12 remainder 5 |
| 3 | 12 ÷ 5 = 2 remainder 2 |
| 4 | 5 ÷ 2 = 2 remainder 1 |
| 5 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 130 and 74 | 4810 |
| 24 and 65 | 1560 |
| 139 and 146 | 20294 |
| 173 and 120 | 20760 |
| 42 and 30 | 210 |