1001
This number is a composite.
1001 = 7 * 11 * 13 (a palindromic number which is the product of three consecutive primes). [Feodoroff]
1001 is 7 times the sum of the next 7 primes and palindromic.
Remove the zeros, one by one, from 1001 and the results in both cases are prime!
1001 is the smallest palindromic number which cannot be prime when read in any base. [Poo Sung]
(There are 2 curios for this number that have not yet been approved by an editor.)
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