Tarantino is the coolest damn guy; he's just so much fun to work with. He might be the best director I've ever worked with. He just seems to know how to do it and he knows how to make you feel good about it. He's having so much fun you start having fun. You can't help it.
The problem of distinguishing prime numbers from composite numbers and of resolving the latter into their prime factors is known to be one of the most important and useful in arithmetic.