DR. JAMES GRIME: So we're going to do a little mathematical trick that I'm hoping that people will like and they'll try out on their friends and family. So let's do it....
JAMES GRIME: One of the reasons we're fascinated by primes is that they are quite weird in the way they behave. On one hand, they kind of feel random. They are turning up all over the place....
PETE WATTS: Well, the number 666 is pretty famous, or I suppose you could say infamous. 666 is called the number of the beast. And the reason that the number 666 has become infamous is not just...