Topic: Prime Factorization
Prime numbers are whole numbers that have only two factors (one and itself) and one proper factor (one).
Problem & example
Some examples of prime numbers are 2,3,5,7.
Which of these numbers are prime?
23, 63, 50
Work and solution
23 is prime because it only has 1 and 23 as factors. 63 is not prime, it is composite because it is divisible by 3, 63/3=21. 50 is not prime either because 2x25 is 50 which means it has more than two factors.