Numberphile describes itself as: “Videos about numbers. It’s that simple." They cover mundane explanations on how math shapes our DNA, for instance, but also dive into esoteric 4th dimensional shapes and how numbers affect whether or not humans have free will. Prolific YouTube creator Brady Haran has been churning out Numberphile videos for three years, turning the channel into an essential resource on philosophy, infinity, and theoretical number problems. In 2015, Numberphile celebrated the three-year anniversary Shinichi Mochozuki hypothetically solving with a special summary video to break down ABC Conjecture.