The only even prime number is \({2}\). All other even numbers are divisible by \({2}\). The number \({1}\) is not prime because a prime number has exactly two factors and \({1}\) only has one factor.

The Gathering has a new card related to prime numbers. Now fans are trying to use it to tackle one of the biggest problems in mathematics ...

The only even prime number is \({2}\). All other even numbers are divisible by \({2}\). The number \({1}\) is not prime because a prime number has exactly two factors and \({1}\) only has one factor.