A106715 Smallest of four consecutive primes whose sum of digits is prime.

2, 3, 191, 311, 313, 593, 821, 1091, 1093, 1291, 1297, 1321, 1451, 2063, 2069, 2081, 2351, 2551, 2557, 2579, 3163, 3167, 3251, 3253, 3257, 3259, 3271, 3659, 3671, 3989, 4133, 4139, 4153, 4157, 4373, 4391, 4397, 4409, 4421, 4919, 5039, 5297, 5413, 5417

Offset

1,1

Links

Table of n, a(n) for n=1..44.

Example

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.

Crossrefs

Sequence in context: A042701 A371232 A246488 * A106817 A233318 A231387

Adjacent sequences: A106712 A106713 A106714 * A106716 A106717 A106718

Keyword

base,nonn

Author

Shyam Sunder Gupta, May 14 2005

Status

approved