"3" and "5".
There is no name for such numbers.
There is no specific name for such numbers.
The property of prime or composite is not defined for the number 1, just as it is not defined for any number that has a fractional part. There are no special names for numbers that are not prime nor composite.
First, zero is not applied to the terms prime and composite because the definitions only apply to natural numbers (positive whole numbers, which does not include zero). One is not prime or composite because one is the unit that is used within the definition of prime of composite numbers, and many definitions of prime and composite even exclude one from the definition. If you want to categorize one within a discussion of prime and composite, it is common to simply call one the unit.
All numbers, (except 1) have at least two factors: 1 and the number itself. So, there are no numbers, besides 1, with only 1 factor. And 1 is neither prime nor composite.
Numbers which has other factors aside from 1 and themselves are called composite numbers.
When a composite number is expressed as the product of its prime factors, we call that the prime factorization.
It is a composite number and a number with only two factors is a prime number