Can we say 5 as non prime number as it ha four factors
1,-1,5,-5
Isnt this true ? Anyone explain
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Examples of the prime numbers less than 20 are 2, 3, 5, 7, 11, 13, 17, and 19 because the only positive integers that each of these numbers is divisible by are itself and 1, i.e., exactly two positive integers... ... One (1) is NOT a prime number because it does not satisfy the definition of a prime number!
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no 5 is a prime number...
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