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  2  2  2  1  1  1  1  2  2  2  1  1  1  1  2  2  2  1  1  2  4  4  4  0  0  0  1  1  2  2  2  2  2  1  4  4  4  0  0  0  2  4  1  2  2  2  1  1  2  4  1
 0  4  0  4  0  0  4  4  0  0  4  4  0  0  4  4  0  0  4  4  0  0  4  4  0  4  4  0  0  4  4  0  4  4  0  0  4  4  0  4  4  0  0  0  4  4  0  4  4  0  4  4  0  0  4  4  0  0  0  4  4  4  4  0  0  0  0  4  4  0  4  4  0  0  0
 0  0  4  4  0  4  4  0  0  4  4  0  0  4  4  0  0  4  4  0  0  4  4  0  4  4  0  0  4  4  0  4  4  0  0  4  4  0  4  4  0  0  4  0  4  0  4  0  4  4  4  0  0  4  4  0  0  0  4  4  0  0  4  4  0  0  4  4  0  4  4  0  0  0  0

generates a code of length 75 over Z8 who´s minimum homogenous weight is 76.

Homogenous weight enumerator: w(x)=1x^0+3x^76+22x^77+3x^78+2x^81+1x^82

The gray image is a code over GF(2) with n=300, k=5 and d=152.
This code was found by Heurico 1.16 in 0.125 seconds.