2309

Number
$2309$ (two thousand, three hundred and-nine) is:


 * The $343$rd prime number


 * The $3$rd primorial prime after $5$, $29$:
 * $2309 = p_5 \# - 1 = 11 \# - 1 = 2 \times 3 \times 5 \times 7 \times 11 - 1$