The generator matrix

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

generates a code of length 81 over Z25 who´s minimum homogenous weight is 302.

Homogenous weight enumerator: w(x)=1x^0+700x^302+700x^303+640x^304+992x^305+2440x^306+4720x^307+4660x^308+3600x^309+3740x^310+5940x^311+10120x^312+9000x^313+6940x^314+6556x^315+10500x^316+16200x^317+13520x^318+11080x^319+10040x^320+14760x^321+23960x^322+19980x^323+14780x^324+12712x^325+18160x^326+26880x^327+19920x^328+14800x^329+11836x^330+14620x^331+19580x^332+14200x^333+8500x^334+5932x^335+7020x^336+9000x^337+4600x^338+2120x^339+1260x^340+1560x^341+1340x^342+920x^343+40x^344+20x^345+12x^350+12x^355+8x^360+4x^365

The gray image is a code over GF(5) with n=405, k=8 and d=302.
This code was found by Heurico 1.16 in 321 seconds.