3. Five odd numbers are written on the board, such that for any two $a$ and $b$ among them (where $b>a$), $\log _{a} b$ is an integer. What is the smallest value that the maximum of these numbers can take?
The answer can be written in the form of a power of a number: $m^{n}$ is denoted as $m^{\wedge} n$.

Answer: $43046721\left\|3^{\wedge} 16\right\| 9^{\wedge} 8 \| 81^{\wedge} 4$

## Examples of writing answers:

12345678

$7^{\wedge} 14$

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