15 is. In addition to ' 1 ' and itself, it has the additional factors 3 and 5 .
No, 19 is prime. A composite number needs to have 3 or more factors. 19 has only 2 factors, 1 and itself, which makes it prime.
It is 19 which is a prime number
The prime numbers between 15 and 25 are- 17, 19 and 23.They are: 17, 19 and 23They are: 17 19 and 23
19 is the tenth odd number, And is not a composite number or even number.
They are 15, 16, 17, 18 & 19.
15 is composite number 17, 19 and 23 are prime numbers.
15 has more than exactly two factors (1, 3, 5, and 15), therefore it is composite. 17, 19, and 23 each have exactly 2 factors (1 and the number itself), so they are primes.
15 is a composite number - it can be divided by 3 and 5. 11, 13, 17 and 19 are all prime numbers, not composite.
It is 15
17, 19, 23, 29 and 31 are prime. 15, 21, 25 and 27 are composite..
The prime factors of 34 are 2 and 17, and 2 + 17 = 19.
2, 3, 5, and 9 includes one composite number - 9. 3, 11, 23, and 31 are all prime numbers. 2, 5, 15, and 19 includes one composite number - 19. 7, 17, 29, and 49 includes one composite number - 49.
18 (All even numbers except 2 are composite.)
231517 is composite number. 19 is a prime number.
The composite numbers between 11 and 19 are: 12 14 15 16 18 The other numbers, 11, 13, 17, and 19, are all prime.
12, 14, 15, 16, and 18 are composite numbers 11, 13, 17, and 19 are prime numbers
19