Features

The Significance of Seven

In the 13th century, Arithmancer Bridget Wenlock came up with a fascinating new theorem which exposed the magical properties of the number seven. The number permeates the Harry Potter septet of books, cropping up in all sorts of interesting places: we’ve laid out some of our favourites below...

Significance of Seven infographic

Full size version

Text version

Who lost the most house points at Hogwarts? Find out our handy history of Hogwarts house points.