Which of these is not a prime number?

Prime numbers are easy to identify because they are only divisible by themselves and the number 1. Thus,
2 is prime, since is is only divisible 1 by 1 and 2
5 is prime, since it is only divisible by 1 and 5
59 is prime, since it is only divisible by 1 and 59
64 is NOT prime, since it is divisible by numerous numbers (1, 2, 4, 9, etc.).

Thus, the answer is 64.

Brother Estabe31 if any one answer my question the views of this questions will increase so my question views are not increasing

64 is not a prime number, because it can be further factored: 2 x 2 x 2 x 2 x 2 x 2.

Thank you for your question.

So, your report on this question shows no impressions? Is that correct?

I'm sorry, but I don't understand the question, Deepak.

U can see the screen shot here

You are very welcome, Deepak!

Yes