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  2  1  1  1  1  2  1  1  1  1  1  1  1  1  1  2  4  1  1  4  2  2  4  2  2  4  2
 0  2  0  0  0  0  0  0  0  0  0  0  0  0  0  4  4  0  0  4  4  4  4  0  0  0  4  4  4  4  0  2  2  2  6  2  6  2  6  6  6  2  6  6  4  2  6  2  2  6  0  0  4  2  6  6  2  6
 0  0  2  0  0  0  0  0  0  0  2  2  6  2  2  2  2  4  0  2  6  4  2  4  2  4  4  6  2  0  4  4  0  6  4  0  0  2  2  6  2  0  6  4  4  4  0  6  2  6  2  6  2  2  2  6  2  0
 0  0  0  2  0  0  0  2  6  2  4  2  2  0  2  2  0  0  4  6  0  2  0  4  0  6  2  6  6  0  4  4  0  4  0  2  6  0  6  4  2  2  4  4  6  4  0  2  6  0  4  2  6  2  0  0  4  2
 0  0  0  0  2  0  2  2  2  4  4  4  4  6  2  2  2  2  0  4  0  0  2  4  6  0  6  6  0  2  0  6  4  4  2  6  0  6  4  4  2  2  6  6  2  2  2  6  6  6  0  2  0  0  0  2  2  2
 0  0  0  0  0  2  2  0  2  6  2  0  2  4  2  0  6  4  4  4  0  2  6  6  0  4  6  6  2  6  4  4  2  4  6  2  2  0  6  2  6  2  6  4  4  0  6  0  2  2  2  4  6  6  2  0  2  0
 0  0  0  0  0  0  4  0  0  0  0  0  0  0  4  0  4  0  4  4  4  4  0  4  4  4  0  0  4  0  0  4  4  0  4  4  0  0  4  0  0  4  0  4  4  0  0  4  4  0  4  4  0  4  0  4  4  0
 0  0  0  0  0  0  0  4  4  0  0  0  0  0  0  4  0  4  4  4  4  4  4  4  0  0  0  0  0  0  4  0  4  4  4  4  0  4  0  4  0  0  0  0  4  4  4  4  4  4  0  4  4  0  0  4  4  0

generates a code of length 58 over Z8 who´s minimum homogenous weight is 46.

Homogenous weight enumerator: w(x)=1x^0+168x^46+556x^48+8x^49+1018x^50+100x^51+1447x^52+324x^53+2508x^54+1236x^55+4224x^56+2404x^57+4888x^58+2412x^59+4001x^60+1292x^61+2582x^62+348x^63+1540x^64+68x^65+918x^66+451x^68+196x^70+62x^72+8x^74+4x^76+2x^78+1x^80+1x^92

The gray image is a code over GF(2) with n=232, k=15 and d=92.
This code was found by Heurico 1.16 in 53.5 seconds.