The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  0  1  1  1  1  1  1  1  1  1  1  1  1  1  1  7  1  1  7  1  1  1  1  1  1 42  1  1  1  1  1  1  1  1  1  1 21 21  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  7 42  1  1  1 21  1  1  1  1  1  1  0  1  1  1  1  1  1 28
 0  1  1 31 16 48  4 19  0 36 31  1 16 19 48  4 36  7 38 26  9  9  6  6 44 46  1 20 46  1 32 32  7 21 38 45  1 43 43 26 33 21 42 22 22 45 33  1  1 11 44 37 23 37 23 20 27 13 16 23 37 48 27 13 20 31 19 38 47 24 14 47 36 21 11  1 25  1  1 24 12 25  1 14 29 26 42 22 46  1  3 33 32  1  7  3  1
 0  0 35 21 42  7 14 21  7 28 14  7 35  0  0 28 42 14 42 28  7 21 35 21 14  0 14 28 42 42  7 35 42 21 28  7 28 21  0 35 14 35 28 14  7  0 42 21 35 21 28  0  7 14 21 14 42  7 28 42 35 28 14  0 42 35  7  0  0  7 28  7 14  0 14 42  0 35  7 14 42 21  0 21 35 21 42 21  7 28 28 28 28  0 35 35 14

generates a code of length 97 over Z49 who´s minimum homogenous weight is 573.

Homogenous weight enumerator: w(x)=1x^0+4242x^573+816x^574+5208x^580+942x^581+1554x^587+84x^588+3402x^594+546x^595+6x^616+6x^623

The gray image is a code over GF(7) with n=679, k=5 and d=573.
This code was found by Heurico 1.16 in 0.316 seconds.