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Q: Is it true that all the prime numbers are odd?

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

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

False.

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

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

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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.

No because 2 is an even number which is also a Prime number that has only two factors which are itself and one.

They are all odd, and they are all prime numbers

All of the prime numbers are odd except for two.

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

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

False.

As long as one of the numbers isn't 2, adding any two prime numbers results in an even number. Why? 1.) Adding any two odd numbers gives an even number, 2.) adding an odd and an even gives an odd, and 3.) all primes are odd, except for 2.

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

All prime numbers are odd except for the number 2.