ABSTRACT
You will remember that a prime number is an integer that is evenly divisible only by 1 and itself. The numbers 2 and 3 are prime; 4 (which is divisible by 2) is not. The only even prime is 2, as all other even numbers are evenly divisible by 1, themselves, and 2. (The number 1 is usually not considered a prime, for technical reasons.)
