Before you think this film has no relevance to the 'real' world, bear in mind that Lasse's field of Number Theory is responsible for the security in the device on which you are watching it.

And watch this space for a film of a meeting between Lasse and his supervisor, Fields Medallist James Maynard, where the topics in this video are explored further.

And go to the playlist for more films in the 'Show Me the Maths' series:    • Show Me the Maths