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Q: Why are all odd prime?

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All prime numbers are odd with the only exception of the prime number 2. However, not all odd numbers are prime.

With exception of the number 2, all prime numbers are odd. However, not all odd numbers are prime.

no, 25 is odd and is not prime 25 = 5 x 5 There is only one even prime number:2, all other prime numbers are odd, but all odd numbers are not prime number

All prime numbers are not odd. 2 is a prime, 2 is not odd.

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.

All of the prime numbers are odd except for two.

All prime numbers are odd except one prime number and that is 2.

Actually 2 is a prime number so not all are odd primes.

That is correct.

No.

No

All prime numbers are odd except for the number 2.

No, odd numbers such as 9, 15, 21, and 27 are not prime.

Yes. Apart from 2, all prime numbers are odd.

All prime numbers are odd except for 2 which is the only even prime number

There is one even prime number (2); the rest are odd.

No. 9 is not prime.

All prime numbers are odd, exept of the first prime number 2.

2 is the only prime number that is not an odd number.

They are not all odd, because one, '2', is even.

There is an infinite amount of prime numbers all of which are odd numbers

No. 2 is a prime and it is not odd. But all other primes must be odd because otherwise they would be divisible by 2.

No :D

'25' is odd, all right, but not prime. (It can be divided by 1, 5, and 25) By the way, prime numbers must be odd numbers. All even numbers can be divided by 2, at least, and are therefore not prime.

This is because they are only two factors in that number. It may seem to you that all prime numbers odd, but it is not true. Most of them however, are prime numbers. This is why most of the odd numbers are prime numbers.