When it comes to finding out if there are secret codes in the Torah, I don’t recommend going to google to find it, unless you know where to look. The fact is that there are indeed codes in the Torah. The reason I know there are codes there, however, is not from statistical tests, but rather great Rabbonim have giving us a glimpse of these codes. (and by the way, this was way before computers).
Now, fyi, as far as “codes” in other written works, l’havdil, you should note that although you might find “codes”, if you were to do statistical tests without a scientist’s personal bias, you will find that the complexity of the codes that have been found in the Torah are by FAR MUCH more complex than simple codes found in a novel, that there’s no comparison whatsoever. However, I would not try find by my own codes in the Torah, since I have no idea of what I’m doing – you would be wise to ask your Rav before attempting to make codes like this.
I definitely would stay away from any codes that do not come from people who are yiras shamayim. There are unfortunately a lot of people among the non-religious that make up all sorts of things not knowing what they’re doing and to meet their own agendas.
Hope this clarifies. Shana tova.