101

Number
$101$ (one hundred and one) is:


 * The $26$th prime number


 * The $1$st of the $9$th pair of twin primes, with $103$


 * The $6$th palindromic prime after $2, 3, 5, 7, 11$.


 * The $7$th of $29$ primes of the form $2 x^2 + 29$:
 * $2 \times 6^2 + 29 = 101$