4 and 9
A prime number is a positive integer that has exactly two different factors: 1 and itself. This is why 1 is not a prime number: it has the factors 1 and itself, but they are the same - it does not have exactly two different factors.
Prime numbers are the numbers that have exactly two factors.Prime numbers have only two factors, the number one and themselves.
All numbers that have exactly two factors are prime numbers whereas composite numbers have more than two factors.
That is correct -- all prime numbers have exactly two factors.
Prime numbers have exactly two factors.All prime numbers have only 2 factors whereas composite numbers have more than 2 factors
Prime numbers have exactly two numbers. There is theoretically an infinite number of them.
They are numbers that are the product of two different prime numbers. If the primes are p and q, the four factors are 1, p, q and pq.
Prime numbers have only two factors.
2 and 3
None. Prime numbers only have two factors.
By definition, a prime number has exactly two factors. So, there are no prime numbers with exactly three factors.
Prime numbers have exactly two factors. 53 and 59 are prime numbers.