Well, your two statements seem kind of contradictory. You say that they are insignificant, but appear to believe that they were placed in the Bible (is it supposed to be capitalized? I don't know I'm just doing it) purposefully. Now, I could be wrong on that assumption, but that is the belief you seem to convey.

If someone purposefully put codes about Hitler thousands of years before his conception, why would they make it to be insignificant. Perhaps God, or the intellectual who created the edited version of the Torah that Drosnin worked off of, was a comical being, and only put these there to perplex us?

Furthermore, if these "codes" were put in the Torah on purpose, did Melville and Tolstoy do such things on purpose? If so, should they be considered prophets; disciples of Jesus himself, or in these cases, it it coincidence? If it's coincidence in the cases of Moby Dick and War and Peace, then why not in the Bible? It wouldn't even really be coincidence, just another case of data mining, as I stated before.