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    4. what is a prime number?
    what is a prime number?

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    0  Views: 406 Answers: 3 Posted: 14 years ago
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      3 Answers

      Prime numbers are those numbers whose factor is the number itself [excluding 1 since 1 is the factor of all the numbers].
      For example, Factor of 2 is 2 only [ excluding 1]
      Similarly, factor of 3 is 3 only [excluding 1]
      factor of 5 is 5 only [excluding 1]

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      14 years ago. Rating: 2
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        A prime number is a number that has factors 1 and itself.


        For example, 5 is a prime number because its factors are 1 and 5.


        6 is not a prime number because its factors are 1, 2, 3 and 6 (it has more factors than 1 and itself). This type of numbers are called compound numbers.  

        14 years ago. Rating: 1
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          A number which can only be divided by itself.

          14 years ago. Rating: 1
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