34567876543

                                                                3 4567876543

+ The largest of four palindromic primes composed of distinct consecutive digits listed first in ascending order and then in descending order. Omar E. Pol calls these the Giza primes (after their similarity to the pyramids at Giza, Egypt).

          8 

        7 . 7  

      6 . . . 6  

    5 . . . . . 5  

  4 . . . . . . . 4  

3 . . . . . . . . . 3

(There is one curio for this number that has not yet been approved by an editor.)

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