647

Number
$647$ (six hundred and forty-seven) is:


 * The $118$th prime number


 * The $43$rd long period prime after $7$, $17$, $19$, $23$, $29$, $\ldots$, $491$, $499$, $503$, $509$, $541$, $571$, $577$, $593$, $619$