

A088288


Palindromic primes made of only two digits say a and b such that replacing a with b and vice versa one gets another prime.


0



131, 191, 313, 919, 113111311, 131333131, 313111313, 331333133, 11199199111, 99911911999, 1111191911111, 9999919199999, 133131131131331, 311313313313113, 777997999799777, 999779777977999, 11177771717777111
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OFFSET

1,1


COMMENTS

Conjecture: Sequence is finite.


LINKS



EXAMPLE

131 and 313 are both members. 313 is obtained by replacing a 3 with a 1 and a 1 with a 3.


CROSSREFS



KEYWORD

base,nonn


AUTHOR



EXTENSIONS



STATUS

approved



