Travelling Salesman (2012 film)
 Travelling Salesman is a 2012 intellectual thriller film about four mathematicians solving the P versus NP problem one of the most challenging mathematical problems in history. The title refers to the Travelling salesman problem an optimization problem that acts like a key to solving other mathematical problems that are thought to be hard. By solving the Travelling salesman problem quickly the mathematicians can for example also factor large numbers quickly.