19 is prime.
It is 1 because 19 is a prime number
19 is the only one that only has 1 and itself as factors. It is the prime number.
The number 1 is neither prime nor composite. The numbers 25, 16, 21, and 27 are divisible by factors that are not one or the number itself. 19 is the only one that has only 1 and itself as factors, so it is a prime number.
A Prime number is a number which can only be divided by 1 and it self to give an integer answer. From the list above the prime numbers would be 1, 3, 7, 11 & 19
1 and 19 (19 is a prime number).
There are no prime numbers that equal 27, as a prime number is defined as a natural number greater than 1 that has no positive divisors other than 1 and itself. The number 27 is not prime; it can be divided by 1, 3, 9, and 27. Thus, 27 is a composite number.
Since the only factors of 19 are 1 and 19, it is a prime number. A prime number is a number with two and only two factors: 1 (also known as unity) and itself. A composite number is a number with more than two factors.
19 is a prime number, so its prime factorization is 1 x 19 or simply 19.
19 is prime the only numebr that is neither prime or composite is 1
1 and 19. It is a prime number.
19 is a prime number. Its only factors are 1 and 19.
19 is a prime number because it has no factors other than 1 and itself.