709

Number
$709$ (seven hundred and nine) is:


 * The $127$th prime number.


 * The larger of the $9$th pair of primes whose prime gap is $8$:
 * $709 - 701 = 8$


 * The smaller of the $12$th pair of primes whose prime gap is $10$:
 * $719 - 709 = 10$


 * The $22$nd emirp after $13$, $17$, $31$, $37$, $\ldots$, $311$, $337$, $347$, $359$, $389$

Also see