The generator matrix

 1  0  1  1  1  0  1  1  0  2  1  1  1  2  1  1  1  4  0  1  1  6  2  1  1  1  1  0  1  1  0  1  1  1  2  1  0  1  1  1  1  1  0  1  1  2  1  1  1  6  1  6  2  1  1  2  1  1  1  1  2  1  4  4  0  0  6  1  1  1
 0  1  1  0  1  1  0  3  1  1  0  7  5  1  0  3  2  1  1  1  2  1  1  4  5  7  2  1  0  1  1  2  3  6  1  5  1  1  1  6  3  4  1  1  3  1  1  2  6  1  0  1  1  2  6  6  5  2  7  6  0  2  0  2  2  1  1  1  3  0
 0  0  2  0  0  0  0  0  0  0  0  0  4  4  6  2  6  6  2  2  2  6  6  6  6  0  4  2  2  6  6  6  6  0  4  6  2  4  6  6  6  0  4  0  0  4  0  6  4  2  2  0  6  2  2  4  4  6  0  0  4  2  4  6  2  0  2  4  4  0
 0  0  0  2  0  0  0  0  2  6  2  6  2  4  6  0  2  2  2  2  4  4  0  4  6  4  0  0  6  0  2  6  6  6  0  6  0  2  0  4  4  4  0  4  4  2  6  2  0  0  4  6  2  0  0  0  4  2  2  4  2  2  2  6  4  4  4  2  2  0
 0  0  0  0  2  0  0  2  0  0  4  6  2  0  6  4  6  6  6  4  2  2  6  6  0  6  4  2  6  4  2  6  4  4  0  0  2  2  0  6  2  6  6  0  4  2  4  0  6  4  4  6  4  0  4  2  4  6  4  6  4  2  2  2  0  2  4  2  4  0
 0  0  0  0  0  2  6  2  6  4  6  6  0  6  2  2  4  0  2  2  4  2  4  2  0  4  2  4  2  4  0  0  0  6  4  6  6  4  2  4  0  4  6  4  2  6  4  2  6  0  6  4  2  6  0  0  6  6  2  6  2  4  4  2  2  6  2  6  6  0
 0  0  0  0  0  0  4  4  4  0  4  4  0  4  4  4  0  0  4  4  0  4  0  4  0  4  0  4  0  4  4  4  4  0  4  0  0  4  0  4  4  0  4  4  4  0  4  4  4  0  4  4  4  0  0  4  0  4  4  0  0  4  4  0  4  0  4  0  0  0

generates a code of length 70 over Z8 who´s minimum homogenous weight is 58.

Homogenous weight enumerator: w(x)=1x^0+96x^58+108x^59+247x^60+404x^61+538x^62+878x^63+1096x^64+1654x^65+1887x^66+2188x^67+2758x^68+3014x^69+3092x^70+2886x^71+2858x^72+2410x^73+1917x^74+1478x^75+1083x^76+822x^77+423x^78+324x^79+237x^80+120x^81+89x^82+74x^83+40x^84+24x^85+18x^86+3x^90+1x^94

The gray image is a code over GF(2) with n=280, k=15 and d=116.
This code was found by Heurico 1.16 in 49.4 seconds.