This number is a prime.
The largest nine-digit prime such that prime(9+9+9+9+9+9+5+0+3) + π(9+9+9+9+9+9+5+0+3) is also prime. [Bajpai]
The largest nine-digit prime such that prime(9+9+9+9+9+9+5+0+3) + π(9+9+9+9+9+9+5+0+3) is also
prime. [Bajpai]