The next prime number after the composite number of 16 is 17
3 x 5 = 15, so 15 is not a prime number.
It is 17.
The prime numbers between 15 and 30 are: 17, 19, 23 and 29
17
Number 17 is but 15 isn't as 5x3 isn't a prime number
The next prime number after the composite number of 16 is 17
17
3 x 5 = 15, so 15 is not a prime number.
It is 17.
It is 17 since 14, 15, and 16 are not prime. It is easy to see right away that 14 is not prime because 2 is the only even prime. Of course, 15 has factors of 3 and 5 so it is not easy. 16 is also even. 17 is prime since its only factors are 1 and itself.
The prime numbers between 15 and 30 are: 17, 19, 23 and 29
17
Even number bigger than two are never prime so cross them out, leaving11,13,15,17,19Any number ending in 5 is divisible by 5 and so can not be prime,This leaves 11,13,17,19 which all could be prime and actually are.
15 is composite number 17, 19 and 23 are prime numbers.
17... and 19 !
The answer is 15.75