227

Number
$227$ (two hundred and twenty-seven) is:


 * The $49$th prime number


 * The $5$th Stern number after $1$, $3$, $17$, $137$


 * The $5$th Stern prime after $1$, $3$, $17$, $137$


 * The $11$th safe prime after $5$, $7$, $11$, $23$, $47$, $59$, $83$, $107$, $167$, $179$:
 * $227 = 2 \times 113 + 1$


 * The smaller of the $16$th pair of twin primes, with $229$


 * The $22$nd minimal prime base $10$ after $11$, $13$, $17$, $19$, $23$, $29$, $31$, $37$, $41$, $43$, $47$, $53$, $59$, $61$, $67$, $71$, $73$, $79$, $83$, $89$, $97$

Also see