A prime number is a special number that can only be divided by one and itself. It makes them a pain for this fella who likes to divide things into neat, equal piles. Let’s dig further… Take the number ...

Is 170,141,183,460,469,231,731,687,303,715,884,105,727 prime? Before you ask the Internet for an answer, can you consider how you might answer that question without a ...

There's a new behemoth in the ongoing search for ever-larger prime numbers — and it's nearly 25 million digits long. A prime is a number that can be divided only by two whole numbers: itself and 1.