The generator matrix

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

generates a code of length 24 over GR(64,4) who´s minimum homogenous weight is 160.

Homogenous weight enumerator: w(x)=1x^0+224x^160+3773x^168+21x^176+7x^184+70x^192

The gray image is a code over GF(8) with n=192, k=4 and d=160.
This code was found by Heurico 1.16 in 0.00449 seconds.