Least Common Multiple (LCM) of 143 and 61
The least common multiple (LCM) of 143 and 61 is 8723.
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 143 and 61?
First, calculate the GCD of 143 and 61 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 143 ÷ 61 = 2 remainder 21 |
| 2 | 61 ÷ 21 = 2 remainder 19 |
| 3 | 21 ÷ 19 = 1 remainder 2 |
| 4 | 19 ÷ 2 = 9 remainder 1 |
| 5 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 23 and 120 | 2760 |
| 19 and 144 | 2736 |
| 90 and 80 | 720 |
| 190 and 173 | 32870 |
| 73 and 96 | 7008 |