8518

8518 = 2 x 4259.

8518 is 6444 in base 11.

It takes 11 steps of the "reverse and add" algorithm to reach a palindrome: 8518; 8518 + 8158 = 16676;16676 + 67661 = 84337; . . . 1771331771.

183 x 2⁸⁵¹⁸ - 1 is a prime number.

LEGO product 8518 is the Ben 10 Alien Force Jet Ray.

Source: On-Line Encyclopedia of Integer Sequences