The Prime Problem with a One Sentence Proof

A prime number problem posed by Fermat that has been proved multiple times - including a famous proof using one just sentence.

See the next video (proof) at: https://youtu.be/yGsIw8LHXM8

This video features Professor Matthias Kreck from the University of Bonn. See him discuss wobbly tables: https://youtu.be/OuF-WB7mD6k

Prime Number Videos: http://bit.ly/primevids