My "Saturday Morning Question" - in which I asked whether readers can still remember their childhood telephone numbers - touched off a wave of evocative and wonderful reflections. Two general themes: ...

Akin to the way we learn numbers in an ascending line, there is a space in our brains that literally map quantities, according to new research. Typically people don’t see a gray area when it comes to ...

What if I told you that you could pick up your phone, dial a number, and enjoy dirty talk with strangers after a few clicks? The phone sex lines industry has been around for a while and enables its ...

Somewhere out there on the number line, huge prime numbers are lurking, waiting to be discovered. On Wednesday, a new one was. The Great Internet Mersenne Prime Search, an organization devoted to ...

In the early 1970s mathematician Donald Knuth spent a sabbatical with his wife in Norway. The time was meant to be spent relaxing. Yet one night he woke up his partner in a state of agitation. He ...