>>16816701
>maybe in hexadecimal,

Mmmh, I see.

Hexadecimal is defined as :
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F]

10(base hexa) = 16(base 10)
1(base hexa) = 1(base 10)
0.1(base hexa) = 1/16(base 10) = 0.0625(base 10)

[math]\pi \simeq 3.243F6A8885A2F7A4371B...(hexa) \simeq 3.141592653589793...(base 10)[/math]

[math]\pi[/math] cant be defined in any finite manner in any base, except in (base [math]\pi[/math] but some math nazis wouldn't permit that.