1481

Number
$1481$ (one thousand, four hundred and eighty-one) is:


 * The $234$th prime number.


 * The $49$th Sophie Germain prime after $2$, $3$, $5$, $11$, $23$, $29$, $41$, $\ldots$, $1031$, $1049$, $1103$, $1223$, $1229$, $1289$, $1409$, $1439$, $1451$:
 * $2 \times 1481 + 1 = 2963$, which is prime.