What are all the prime number for 16 to 32?
1 Answer
Nov 5, 2016
Explanation:
The prime numbers between
#17, 19, 23, 29, 31#
The odd composite numbers in that range are:
#21 = 3xx7#
#25 = 5xx5#
#27 = 3xx3xx3#
Bonus
Of the prime numbers we list, two are special:
#17 = 2^(2^2)+1#
which is one of the few known Fermat primes.
Pierre de Fermat conjectured that any number of the form
#31 = 2^5-1#
which is a Mersenne prime, being of the form