The generator matrix

 1  0  1  1  1  6  1  1 12  1  1 10  1  1  8  1  1 14  1  1  4  1  1  2  1  1  0  1  1  6  1  1 12  1  1 10  1  1  1  1  1  1  1  1  8 14  4  2  2  2  0  2  2 12  2  2  2  2  8  4  1  1  1  1  1
 0  1  3  6  5  1 12 15  1 10  9  1  8 11  1 14 13  1  4  7  1  2  1  1  0  3  1  6  5  1 12 15  1 10  9  1  8 14 11 13  4  2  7  1  1  1  1  1  0  6  2 12 10  2  8  4 14  2  2  2  0 12  8  4  0

generates a code of length 65 over Z16 who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+15x^64+216x^65+12x^66+8x^69+4x^74

The gray image is a code over GF(2) with n=520, k=8 and d=256.
This code was found by Heurico 1.16 in 0.0734 seconds.