Across the 75 years since something—something—crashed outside Roswell in early July 1947, the very name itself has taken on a life of its own: Today, it’s shorthand for UFOs, extraterrestrials, and a...

Intuition tells mathematicians that adding 2 to a number should completely change its multiplicative structure—meaning there should be no correlation between whether a number is prime (a multiplicative property) and whether the...