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That's a prime number.

A prime number is a whole number with exactly two factors: 1 and itself.

Those are prime numbers.

A prime number has exactly two factors: itself and 1.

A prime number is a positive integer greater than 1 having exactly two factors, 1 and the number itself.

Every number greater than 1 has 1 and the number itself as factors. If it has no other factors besides these two factors, it is a prime number. If it has more factors than 1 and itself, it is a composite number.

A prime number has exactly two factors: 1 and itself.

a prime number

prime number

No, a prime number has exactly two factors: 1 and itself.

No, a prime number has exactly two factors: 1 and itself.

A prime number has exactly two factors, 1 and the number itself. A composite number has more factors than 1 and itself.

Any prime number has exactly two factors, 1 and the number itself.

A prime number has exactly two factors, 1 and the number itself.

A prime number

prime.

A prime number

Every number greater than 1 has the two factors 1 and the number itself.

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.

Every prime number has exactly 2 factors, 1 and the number itself.

Prime Number

a prime number

A prime number !

prime number

Each prime number has only two factors which are itself and one.