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The reason 2 is the only Prime number is that every other even number is divisible by 2. Thus, they cannot be prime because they are not divisible by 1 and themselves only.
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Is a prime number odd?
All prime numbers are odd except one prime number and that is 2.
Is every prime number odd?
Every single prime number Is odd , with the exception of 2 being an even number , but ... Not every single odd number is going to be prime. Example: 9-1,3,9
Does composite numbers have to be odd explain why?
The answer is 'no', so there isn't any 'why'. As a matter of fact, every EVEN number except 2 is composite, and every prime number bigger than 2 is odd..
Is a prime number always an odd number?
Except for 2 all other prime numbers are odd. Otherwise, they would be divisible by 2 (and thus not a prime number). This does NOT mean that all odd numbers are prime, but that all prime numbers (aside from 2) are odd.
Is every odd number greater then one a prime number?
No. The first odd number, counting up from one, that is not a prime number, is 9.
