The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  5  1  1  1  1  1 10  1  1  1  1  1 20  1  1  1  1  1 15  1  1  1  1  1  0  1  1  1  1  1  5  1  1  1  1  1 10  1  1  1  1  1 20  1  1  1  1  1 15  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1
 0  1 16  7 14 18  5 21 12 19 23  1 10 11 17  9  3  1 20  6  2  4 13  1 15  1 22 24  8  1  0 16  7 14 18  1  5 21 12 19 23  1 10 11 17  9  3  1 20  6  2  4 13  1 15  1 22 24  8  1  0  5 16 21 10 11  7 12 14 18 19 23 17  9  3 20  6  2  4 13 15

generates a code of length 81 over Z25 who´s minimum homogenous weight is 323.

Homogenous weight enumerator: w(x)=1x^0+320x^323+200x^324+80x^328+4x^330+16x^335+4x^355

The gray image is a code over GF(5) with n=405, k=4 and d=323.
This code was found by Heurico 1.16 in 0.093 seconds.