207,622,421

Number
$207 \, 622 \, 421$ is:


 * The $11 \, 477 \, 490$th prime number


 * The $9$th of a sequence of $16$ consecutive prime numbers of the form $4 n + 1$:
 * $207 \, 622 \, 421 = 4 \times 51 \, 905 \, 605 + 1$