Least Common Multiple (LCM) of 21 and 184
The least common multiple (LCM) of 21 and 184 is 3864.
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 21 and 184?
First, calculate the GCD of 21 and 184 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 21 ÷ 184 = 0 remainder 21 |
| 2 | 184 ÷ 21 = 8 remainder 16 |
| 3 | 21 ÷ 16 = 1 remainder 5 |
| 4 | 16 ÷ 5 = 3 remainder 1 |
| 5 | 5 ÷ 1 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 87 and 185 | 16095 |
| 130 and 184 | 11960 |
| 138 and 113 | 15594 |
| 191 and 89 | 16999 |
| 12 and 54 | 108 |