OFFSET
1,3
COMMENTS
Every palindrome with an even number of digits is divisible by 11 (in base 2) and therefore is composite (not prime). Hence there is only one palindromic prime with an even number of digits, namely 11_2 = 3_{10}.
LINKS
Martin Raab, Table of n, a(n) for n = 1..66
Eric Weisstein: Palindromic Prime.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Martin Renner, Apr 15 2006
EXTENSIONS
a(23)-a(40) from Donovan Johnson, Dec 02 2009
Extended to a(66) by Martin Raab, Oct 20 2015
STATUS
approved