World is all about symbols, both for the good and the bad side. And few symbols are more employed than numbers. Here's some examples:

Bible links the numbers 7 and 12 and its multiples to God

Buddhist frens believe that there's sacred aspects to the number 8 and its multiples

13 is a bad number linked to multiple betrayal events (13 people in the Last supper including the traitor, 13 gods in Asgard when Loki betrayed Baldur and killed him, Charles DeMolay, the last Templar GrandMaster, was betrayed by the Vatican he swore to defend, arrested and burned at the stake on a Friday 13th)

Freemasons can't let go of their 33s to save their lives.

Tesla mentioned there was some deep hidden power within the numbers 3,6 and 9

That said, has someone ever done an in-depth numerological analysis of the number 17 and if it holds any occult meaning ?