Sexy Primes

Alex Bellos discusses how the Incans used knots in string (Quipu) to record numbers.Check out Brilliant (get 20% off their premium service): https://brillian...

Sexy primes are prime numbers which differ by six - but what is an "Octomus Prime"???

Prime Number playlist: https://bit.ly/PrimePlaylist

Featuring Dr James Grime. James Tweets at https://twitter.com/#!/jamesgrime