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9 can be broken down into 3 and 3,

however you cannot multiply anything by anything to get 19.

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Q: Why is 9 a composite number but 19 is a prime?
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Related questions

Which number is prime 9 19 21 25?

3 x 3 = 9 (Not a prime ; Composite) 1 x 19 = 19 ( Prime) 3 x 7 = 21 (Note a prime: Composite) 5 x 5 = 25 (Not a prime ; Composite).


Is 9 an prime or composite number?

It is a composite number.


Is 171 a prime number or a composite?

A prime number is a number that is divisible only by 1 and itself; it has no other factors. A composite number is a number that is divisible by more than 2 numbers. The factors of 171 are 1, 3, 9, 19, 57, and 171. Therefore, 171 is a composite number.It is a prime number, because there is no other factors apart from 1 and itself, which is 171.171 is a composite number. The prime factors for 171 are 3, 3, and 19.3 x 3 x 19 = 171


Is 9 is a composite number or prime?

It is a composite.


Is for is 9 a prime or a composite number?

It is composite.


Is 9 a prime composite or neither?

9 is a composite number


How is a prime number different from a composite number?

A prime number has only two factors, one and the number itself. A composite number has more than two factors. Prime number examples are: 2, 3, 7, and 19. Composite number examples are: 4, 9, 12, and 18.


What is the prime or composite for 9?

9 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.


Is 9 composite number or a prime number?

A prime number is not divisible by any numbers except 1 and itself. A composite number is divisible by other numbers. 9 is divisible by 3, so it is a composite number.


Is 171 a prime number?

The number 171 is composite because it can divide not just by 1 and 171 but 3, 9, 19 and 57.


What is the name of the composite which has prime number 9?

All multiples of 9 are composite numbers; however, 9 itself is not a prime number. Its factors are 1, 3, and 9.


Is 9 prime or composite or neither?

9 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.