229

It is the fiftieth prime number, and a regular prime. It is also a full reptend prime, meaning that the decimal expansion of the unit fraction 1/229 repeats periodically with as long a period as possible. With 227 it is the larger of a pair of twin primes, and it is also the start of a sequence of three consecutive squarefree numbers.It is the smallest prime that, when added to the reverse of its decimal representation, yields another prime: 229 + 922 = 1151.