135465468, 4, 8, 12, 9, 98, 99, ect.
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A prime number is any number that only has only one and itself as factors. By definition even numbers have a factor of two. Therefore the only even number that is prime is the number 2.
Any two prime numbers will be relatively prime. Numbers are relatively prime if they do not have any prime factors in common. Prime numbers have only themselves as prime factors, so all prime numbers are relatively prime to the others.
The opposite of prime numbers are composite numbers.
Products of prime numbers are composite numbers.
There are more than 25 prime numbers; there are an infinite number of prime numbers.