Some Interesting Things About the Number 23

This week's discussion is about the 23 enigma.
Sources:
http://www.independent.co.uk/news/uk/this-britain/23-fascinating-facts-about-the-number-twenty-three-6262624.html
http://www.lifedeathprizes.com/amazing-stuff/number-23-7743
https://en.wikipedia.org/wiki/23_enigma#cite_note-3