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  1  1  7  7  1  1 21 21  1 42  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 21  1  1  1  1 42  1  7  1  1  1  1  1  7  1  1  1  1  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 20 46 46  1  1 32 32  1  1 11  1  7 21 43 22 38 26 45 33 22 43 44 23 21 45 33 20 14 14 38 47 13 47 48 23 31 24 46 43  1  9 41 47  1  1  4  1 26 24 11 41  8  0 28 44 35 10 29 42 16  6 32 33  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 28  0 42 42 14  7 35 21 35 21 28 35 21  0  7  0 14  7 42 14 21 28  7 14  0  0 21 35  7 28 35 42  7 14 42 35  7 35 42  7 14 35 28 28  0 42 21 42 14 28  7  0 14 28  0 21 42 14 28 28  0 14  7 42

generates a code of length 89 over Z49 who´s minimum homogenous weight is 525.

Homogenous weight enumerator: w(x)=1x^0+5238x^525+5418x^532+2232x^539+3906x^546+12x^574

The gray image is a code over GF(7) with n=623, k=5 and d=525.
This code was found by Heurico 1.16 in 5.61 seconds.