546

Number
$546$ (five hundred and forty-six) is:


 * $2 \times 3 \times 7 \times 13$


 * The $16$th integer $m$ such that $m! - 1$ (its factorial minus $1$) is prime:
 * $3$, $4$, $6$, $7$, $12$, $14$, $30$, $32$, $33$, $38$, $94$, $166$, $324$, $379$, $469$, $546$