11,657

Number
$11 \, 657$ (eleven thousand, six hundred and fifty-seven) is:


 * The $1400$th prime number


 * The $6$th after $11 \, 593$, $11 \, 597$, $11 \, 617$, $11 \, 621$, $11 \, 633$ of a sequence of consecutive prime numbers all of the form $4 n + 1$:
 * $11 \, 657 = 4 \times 2914 + 1$