11, 101, 131, 151, 181 and 191.
the number 9 with a never ending list of nines after it.
No difference. Once you've found the factors of a number, the prime numbers on that list are the prime factors.
Look up a list of prime numbers (a Google search for "prime numbers" or "list of prime numbers" should do); every number (greater than 1) that is NOT a prime number is composite.
The number of prime numbers between 1 and 10 is 4. Those are 2, 3, 5, and 7. The number one is not included in this list, because it is not considered prime.
11, 13, 17, 19
list the prime numbers between one and twenty
That's an infinite list.
It is impossible to list all the prime numbers as there are an infinite number of them. The list of prime numbers starts: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, ... Suppose you could list all the prime numbers and have done so - there is no prime number which is not on the list. Multiply them all together and add 1. This number is not divisible by any of the listed prime numbers as there is always a remainder of 1. So either this new number is a prime number, or there is another prime number not listed which will divide into it. Which means that the list was not all the prime numbers; meaning it is impossible to list all the prime numbers.
You cannot list all the potential prime factors. Any prime number can be a prime factor. There are an infinite number of prime numbers, so there are an infinite number of potential prime factors. If given a specific number, the prime factors for it can be listed.
41 is the prime number in this list.
71 73 79 83 89 97
Search the Internet for a list of prime numbers - the Wikipedia article on prime numbers might list a few. All numbers between 2-100 that are not prime, are composite. (The number is not counted as prime, nor as composite.)