A106715 - OEIS

%I #3 Oct 02 2013 15:47:29

%S 2,3,191,311,313,593,821,1091,1093,1291,1297,1321,1451,2063,2069,2081,

%T 2351,2551,2557,2579,3163,3167,3251,3253,3257,3259,3271,3659,3671,

%U 3989,4133,4139,4153,4157,4373,4391,4397,4409,4421,4919,5039,5297,5413,5417

%N Smallest of four consecutive primes whose sum of digits is prime.

%e a(3)=191 is a term because this is smallest of four consecutive primes i.e. 191,193,197 and 199, whose sum of digits is prime i.e. 1+9+1=11, 1+9+3=13, 1+9+7=17 and 1+9+9=19.

%K base,nonn

%O 1,1

%A _Shyam Sunder Gupta_, May 14 2005