The generator matrix

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

generates a code of length 19 over GR(64,4) who´s minimum homogenous weight is 120.

Homogenous weight enumerator: w(x)=1x^0+413x^120+672x^121+2240x^126+2233x^128+2240x^129+15680x^134+4900x^136+4256x^137+70x^144+63x^152

The gray image is a code over GF(8) with n=152, k=5 and d=120.
This code was found by Heurico 1.16 in 0.0562 seconds.