Least Common Multiple (LCM) of 42 and 161
The least common multiple (LCM) of 42 and 161 is 966.
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 161?
First, calculate the GCD of 42 and 161 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 42 ÷ 161 = 0 remainder 42 |
| 2 | 161 ÷ 42 = 3 remainder 35 |
| 3 | 42 ÷ 35 = 1 remainder 7 |
| 4 | 35 ÷ 7 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 127 and 108 | 13716 |
| 158 and 18 | 1422 |
| 71 and 35 | 2485 |
| 59 and 119 | 7021 |
| 154 and 120 | 9240 |