1009

Number
$1009$ (one thousand and nine) is:


 * The $169$th prime number


 * The $1$st prime number which can be expressed in the form $x^2 + n y^2$ for all values of $n$ from $1$ to $10$


 * The $34$th emirp after $13$, $17$, $31$, $37$, $\ldots$, $733$, $739$, $743$, $751$, $761$, $769$, $907$, $937$, $941$, $953$, $967$, $971$, $983$, $991$

Also see