The generator matrix

 1  0  1  1  1  1  1  1  1  0  1  1  1  1  1  1  1  1  X  1  1  1  1  X  1  1 3X  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1 2X 2X 3X  1  1 3X  1  0  1  1  1  1  1  1  X
 0  1  1  2 3X+4  3  0 3X+1  2  1 3X+4  3  X X+2 4X+4  X 3X+1 X+3  1 4X+1 X+2 4X+4 X+3  1  1 X+4  1 2X 2X 3X+2  2 2X+3 4X+3 2X+3  0 3X+2 2X X+2 X+1 2X+4 4X+1 X+4 2X+4  X X+1 4X+3 3X+1 4X+2 3X+2 4X+2  1  1  1 2X+4  3  1 X+3  1 3X 4X+1 4X+4 3X  1 4X+3  1
 0  0 3X 2X  X  0 4X 2X  X 2X 3X 4X 2X 3X 4X  X  0 3X 4X  X 4X  0 2X 3X 4X 2X  X  X 3X  X  0 3X 4X  X 2X 3X 4X 2X 3X 4X 2X 3X  X  0  0  0  X 4X  0 2X  0 2X 4X  0 2X 3X  X  X 3X 4X 2X 4X  0 3X  0

generates a code of length 65 over Z5[X]/(X^2) who´s minimum homogenous weight is 255.

Homogenous weight enumerator: w(x)=1x^0+260x^255+1400x^256+160x^260+600x^261+100x^265+100x^266+100x^270+400x^271+4x^275

The gray image is a linear code over GF(5) with n=325, k=5 and d=255.
This code was found by Heurico 1.16 in 82.9 seconds.