The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  1  1  1  1  2  1  1  1  1  1  1  1 2a
 0  1 2a^2+3  a 3a^2+2 2a^2+3a+1 a^2+3a a^2+3a+3  2 2a^2+2a+3 a+2 3a^2+2a+2 2a^2+3a+3 a^2+a a^2+3a+1  1 2a 2a^2+2a+1 3a 3a^2+2a 2a^2+a+1 a^2+a+2 a^2+a+3  1

generates a code of length 24 over GR(64,4) who´s minimum homogenous weight is 163.

Homogenous weight enumerator: w(x)=1x^0+1344x^163+504x^168+2240x^171+7x^192

The gray image is a code over GF(8) with n=192, k=4 and d=163.
This code was found by Heurico 1.16 in 0.00236 seconds.