Yes.
For numbers below 100, just see whether you can divide by 2, 3, 5, and 7. If you can't, it is a primer. For larger numbers, you may have to try more factors.
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47 is prime.
47 as a product of prime factors is: 47. [47 is a prime number, so it only has itself as a prime factor - note 1 is NOT a prime number.]
47 is a prime number.
47 is prime.
47 is a prime number - but 63 is not a prime number.