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Only 2. All prime numbers are numbers that have no factors other than themselves and 1. By definition all even numbers are evenly divisible by 2. So any even number higher than 2 has 2 as a factor and therefore is not prime.
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What number would be a counterexample to the following conjecture Prime numbers are odd?
2 would be a counterexample to the conjecture that prime numbers are odd. 2 is a prime number but it is the only even prime number.
Why are square numbers one less than a prime number always even?
Prime numbers, except 2, are always odd (they would not be prime if they were even cos they would be divisible by 2.) 1 less than any odd number must be an even number.
Is a 14 a prime number?
No. 14 is an even number and the ONLY even prime is 2.
Is 7 a prime number and a even number?
7 is prime and not even.
Can an Even number be prime why?
Yes it can. 2 is an even number and it is prime.
Are there any prime numbers that are even?
Yes. The number two. After that, any other even number would be divisible by two and not a prime number.
What number would be a counterexample to the following conjecture Prime numbers are odd?
2 would be a counterexample to the conjecture that prime numbers are odd. 2 is a prime number but it is the only even prime number.
Can a even number connot be a prime number?
2 is even, and it is a prime number. No other even number is prime, since by definition, an even number has 2 as a factor.
Why are square numbers one less than a prime number always even?
Prime numbers, except 2, are always odd (they would not be prime if they were even cos they would be divisible by 2.) 1 less than any odd number must be an even number.
Can a even number be a prime number?
Yes, 2 is a prime number and an even number.
Is 992 a prime number?
No. No even number can be prime and 992 is an even number.
Is number on e a prime or even number?
The number 1 is prime, but not even.
Does every prime number have one even prime number?
No. The only even prime number is 2.
Is a 14 a prime number?
No. 14 is an even number and the ONLY even prime is 2.
Is 1990 prime or even?
1,990 is NOT a prime number but it is an even number.
Which number is even and prime?
2 is the only prime number that is even.
Is 7 a prime number and a even number?
7 is prime and not even.
