%I #10 Jan 15 2013 21:55:47
%S 11,13,17,31,37,71,73,79,97,113,131,179,199,311,337,373,733,919,991,
%T 3911
%N Primes with property that each swapping any pair of digits also gives a prime.
%C Conjecture: next terms are 1111111111111111111 and 11111111111111111111111.
%e Prime 179 is a term because 197 and 719 are also prime.
%e Prime 1913 is not a term because 9113 is not prime (even though 1193, 1319, 1931 and 3911 are primes).
%Y Cf. A003459 (absolute primes).
%Y Subsequence of A069706 (primes with property that swapping first and last digits also gives a prime).
%K nonn,base,less
%O 1,1
%A _Jaroslav Krizek_, Dec 26 2012