Least Common Multiple (LCM) of 43 and 147
The least common multiple (LCM) of 43 and 147 is 6321.
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 43 and 147?
First, calculate the GCD of 43 and 147 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 43 ÷ 147 = 0 remainder 43 |
| 2 | 147 ÷ 43 = 3 remainder 18 |
| 3 | 43 ÷ 18 = 2 remainder 7 |
| 4 | 18 ÷ 7 = 2 remainder 4 |
| 5 | 7 ÷ 4 = 1 remainder 3 |
| 6 | 4 ÷ 3 = 1 remainder 1 |
| 7 | 3 ÷ 1 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 168 and 162 | 4536 |
| 140 and 42 | 420 |
| 52 and 42 | 1092 |
| 121 and 168 | 20328 |
| 137 and 21 | 2877 |