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 ...

The online computer game “Is this prime?” tests a player’s knowledge of prime numbers—and just surpassed 2,999,999 attempts. Give it a whirl. The Greek mathematician Euclid may very well have proved, ...

The largest known prime number has been discovered by a computer at a university in Missouri in the US. Prime numbers - such as two, three, five and seven - are divisible only by themselves and one, ...