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They are neither prime numbers nor composite numbers. It is because, they do not have two factors at least.

Q: Why are 1 and 0 not prime or composite numbers?

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Composite numbers are divisible by prime numbers.

The vast majority of positive integers can be classified in two ways: prime and composite. Prime numbers have only two factors, composite numbers have more than two. The numbers 1 and 0 are neither prime nor composite.

A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.

There are more composite numbers. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.

A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.

Related questions

Composite numbers are divisible by prime numbers.

A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.

The vast majority of positive integers can be classified in two ways: prime and composite. Prime numbers have only two factors, composite numbers have more than two. The numbers 1 and 0 are neither prime nor composite.

Prime numbers have two factors, composite numbers have more than two.

There are more composite numbers. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.

Prime numbers have two factors, composite numbers have more than two.

21 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.