Is 23 a prime number?
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To find out if 23 is a prime number, we went through our prime number check list. Everything on our
prime number check list must be true for 23 to be a prime number. For 23 to be a prime number, it must be an integer and a positive number: True For 23 to be a prime number, it must be a number greater than 1: True For 23 to be a prime number, it must be the number 2 or an odd number greater than 2: True For 23 to be a prime number, it must only be divisible by 1 and itself: True All of our tests above proved true, therefore the answer to the question: "Is 23 a prime number?" is as follows: YES: 23 is a prime number. Using the knowledge you learned above to figure out if 23 is a prime number, do you know the answer to: Is 24 a prime number? 
