Q: Is a counting number with exactly two different factors?

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A prime number has exactly two factors.

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

Four of them.

Related questions

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

a prime number

They are also counting numbers.

30

510510

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.

The factors of 4 are 1, 2, and 4 .

I belive it is 4. The factors of 4 are 1,4, and 2.

169

A prime number has exactly two factors.

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

Four of them.