Graham's number arose from a simple mathematics problem, ... | funfact.wiki | funfact.wiki
Graham's number arose from a simple mathematics problem, yet it is so large that writing one digit on every atom in the universe would not be enough. Even bringing as many universes as there are atoms in one universe still would not suffice.
In the 1982 SAT, only 3 of 300,000 students answered a circle rotation problem correctly. Even the test makers were wrong, and the correct answer was not among the choices. The key is the coin rotation paradox: a circle rolling around an equal circle makes 2 full turns, not 1.