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palindromic prime (another Prime Pages' Glossary entries) |
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Glossary:
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A palindromic prime is simply a prime which is a palindrome. Obviously this depends on the base in which the number is written (for example, Mersenne primes
are palindromic base 2). When no radix is indicated, we assume the radix is 10.
In base ten a palindrome with an even number of digits is divisible by 11. So 11 is the only palindromic prime with an even number of digits. As an example of palindromic primes, here is a pyramid (list) of palindromic primes supplied by G. L. Honaker, Jr.
2 30203 133020331 1713302033171 12171330203317121 151217133020331712151 1815121713302033171215181 16181512171330203317121518161 331618151217133020331712151816133 9333161815121713302033171215181613339 11933316181512171330203317121518161333911
See Also: Strobogrammatic, Tetradic Related pages (outside of this work)
References:
Chris Caldwell © 1999-2008 (all rights reserved)
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