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  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  5  1  1  1  1  1  1  1  1  1  1  5  1  1  1  1  5  1  1  1  5  1  1  1
 0  5  0  0  0  0  0  5  5 20 10 15 20 15 15 15 10 10  0  0 10 10 15 15 10 10 10  0  0 15 10 20 15 15  0 10 15 20  5 10 20 20 20  0 20 20 20  0 15  0 20 10 15 10  5  5  5 15 10 20 20 10  5 10 20 20  0 15  5 15  5 20 10 20  0 10 15  5 20  5  0 10  5 10  0 15  0  0  5 20 20  5
 0  0  5  0  0  5  5 15 20 15  0  5 10 10 20  0 20  5  5  0  5 15  5 15 20  0 10 10 10 20  5 20  5 15 15 20 10 20  5  0  5  0  5 15 20  5  0 10 15  0  0 10 10 20  0 15  0 10  0 10 20  5 10  5  0  5 15 20  5 10 10 10 20  5 20  5  5 20 20  5  0 10  0 20  5 10  0  0 10  0  5 10
 0  0  0  5  0 15 10 15  5  5 20  5  0  5 10  5  5 10 15 10  5  0  5 20 15 10 20 10 15 10 10 20  0 10 15  0 10 15  0  5  5 20 10  0 15 15 20  5 20  5 15  5 20 10 10 20 20 15  5 10  5 15  0  5  0  0  5  0  5 10 10 20 15  0 10 15 10 15  5 15  5  0 10 10 15 10 15 20 15  5 10 10
 0  0  0  0  5 15  5 20 15  5 15 20 10  0  0  5  0 15 10  5  5 20  5 10  0 20  0 20  5  5 20 10 20 15 10 10 20 15 20 20 15 20 20 15  5  5  0 20 15 10  0  0 20 10 15 20 15 10  5  0 10 15 20 20  0  0 15  5 10 10 10 10 15 15  5  5  0 15 15  0 20 20  5 15  0  0 10  0 15 15 15  5

generates a code of length 92 over Z25 who´s minimum homogenous weight is 345.

Homogenous weight enumerator: w(x)=1x^0+220x^345+424x^350+400x^355+400x^357+448x^360+1800x^362+332x^365+5200x^367+232x^370+5100x^372+228x^375+224x^380+156x^385+96x^390+108x^395+68x^400+92x^405+32x^410+24x^415+20x^420+4x^425+4x^430+4x^435+8x^440

The gray image is a code over GF(5) with n=460, k=6 and d=345.
This code was found by Heurico 1.16 in 1.67 seconds.