Divide the number by all the prime numbers less than the flooring value of square root of a number
for eg:square root of 2,321 is 48.176..., we need to
try dividing 2,321 by primes less than 48
(7,11,13,17,19,23,29,31,37,41,43,47) since 2,321 is
divisible by 11, it is NOT prime and therefore...