Question

List all the factors of 19. Tell whether 19 is prime or composite.plus again 100 points

Answer 1

Answer: The factors of 19 are 1 and 19. 19 is a prime number.

Explanation:

To find the factors of 19, we need to find all the whole numbers that can be multiplied to equal 19. The factors of 19 are 1 and 19. Since 19 only has two factors, 1 and 19, it is a prime number. To confirm this, we can also check if 19 is divisible by any numbers other than 1 and itself. Since it is not, we can conclude that 19 is a prime number.

Answer 2

Explanation:

19can be factorised as ,

1× 19

19 × 1

All factors= 1 and 19

since it has only two factors 1 and the number itself so it is a prime number .

Numbers which have more than 2 factors ( 1 and the number itself) are called composite numbers .

And we are done!

- Rishabh