229

Number
$229$ (two hundred and twenty-nine) is:


 * The $50$th prime number


 * The $11$th of $29$ primes of the form $2 x^2 + 29$:
 * $2 \times 10^2 + 29 = 229$


 * The $11$th near-repdigit prime after $101$, $113$, $131$, $151$, $181$, $191$, $199$, $211$, $223$, $227$


 * The larger of the $16$th pair of twin primes, with $227$


 * The $19$th long period prime after $7$, $17$, $19$, $23$, $29$, $47$, $59$, $61$, $97$, $109$, $113$, $131$, $149$, $167$, $179$, $181$, $193$, $223$


 * The $45$th positive integer $n$ such that no factorial of an integer can end with $n$ zeroes.

Also see