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A Prime number has as its only two factors: one and the number. This is not the case for 2019. Just by looking at it an summing up the digits (2+0+1+9 = 12), I know that 2019 is divisible by 3 (so 3 is a factor of 2019), therefore 2019 is not prime.

Q: Why is 2019 a prime number?

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2019 is not a prime number. Other than itself and 1, its positive integer factors are 3 and 673.

2019 is a composite number. This is because composite numbers are any number that has more than two factors(one and itself). Therefore, since 3 and 673 are factors of 2019 that makes it a composite number.

composite

It is composite.

a factor is a factor , a prime number is a prime number, but a prime factor is a factor which is a prime number. it has to depend on what number number. exp 13 is a prime number

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No; it is divisible by 3.

2019 is not a prime number. Other than itself and 1, its positive integer factors are 3 and 673.

2019 is a composite number. This is because composite numbers are any number that has more than two factors(one and itself). Therefore, since 3 and 673 are factors of 2019 that makes it a composite number.

composite

It is composite.

Yes it is. You can divide 2019 by 3.

Yes.

2019

a factor is a factor , a prime number is a prime number, but a prime factor is a factor which is a prime number. it has to depend on what number number. exp 13 is a prime number

You is called a prime number!You is called a prime number!You is called a prime number!You is called a prime number!

7 is a prime number!

Composite because it has more than two factors.