#код на Ruby
num = "1234".to_i(5)
for i in 2..36
s = num.to_s(i)
p [i,s]
end
Вывод
[2, "11000010"]
[3, "21012"]
[4, "3002"]
[5, "1234"]
[6, "522"]
[7, "365"]
[8, "302"]
[9, "235"]
[10, "194"]
[11, "167"]
[12, "142"]
[13, "11c"]
[14, "dc"]
[15, "ce"]
[16, "c2"]
[17, "b7"]
[18, "ae"]
[19, "a4"]
[20, "9e"]
[21, "95"]
[22, "8i"]
[23, "8a"]
[24, "82"]
[25, "7j"]
[26, "7c"]
[27, "75"]
[28, "6q"]
[29, "6k"]
[30, "6e"]
[31, "68"]
[32, "62"]
[33, "5t"]
[34, "5o"]
[35, "5j"]
[36, "5e"]
Ответ х = 4