A083983 - OEIS

A083983

If k is a number with exactly two distinct decimal digits, say a and b, neither of which is 0 (i.e., a member of A101594), define the self-complement of k, SC(k), to be the number obtained by replacing a with b and vice versa. E.g. SC(232233) = 323322. Sequence contains primes p such that SC(p) is also a prime.

%I #13 Jul 29 2017 12:36:34

%S 13,17,31,37,71,73,79,97,113,131,191,199,313,331,337,773,911,919,1171,

%T 7717,11113,11119,11177,11717,33331,77171,77711,79999,97777,99991,

%U 113111,131111,131113,131311,191999,199999,313133,313331,313333,331333,333737,377737

%N If k is a number with exactly two distinct decimal digits, say a and b, neither of which is 0 (i.e., a member of A101594), define the self-complement of k, SC(k), to be the number obtained by replacing a with b and vice versa. E.g. SC(232233) = 323322. Sequence contains primes p such that SC(p) is also a prime.

%H Arkadiusz Wesolowski, <a href="/A083983/b083983.txt">Table of n, a(n) for n = 1..10000</a>

%K base,nonn

%O 1,1

%A _Amarnath Murthy_, May 22 2003

%E More terms from _David Wasserman_, Dec 07 2004

%E Offset corrected by _Arkadiusz Wesolowski_, Oct 17 2011