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.

13, 17, 31, 37, 71, 73, 79, 97, 113, 131, 191, 199, 313, 331, 337, 773, 911, 919, 1171, 7717, 11113, 11119, 11177, 11717, 33331, 77171, 77711, 79999, 97777, 99991, 113111, 131111, 131113, 131311, 191999, 199999, 313133, 313331, 313333, 331333, 333737, 377737

Offset

1,1

Links

Arkadiusz Wesolowski, Table of n, a(n) for n = 1..10000

Crossrefs

Sequence in context: A246045 A359978 A108388 * A129338 A378964 A138535

Adjacent sequences: A083980 A083981 A083982 * A083984 A083985 A083986

Keyword

base,nonn

Author

Amarnath Murthy, May 22 2003

Extensions

More terms from David Wasserman, Dec 07 2004

Offset corrected by Arkadiusz Wesolowski, Oct 17 2011

Status

approved