That proof by contradiction was used by Euclid to demonstrate their infinitude.
A theorem about these entities states that the number of them below x is grows as x over l-n of x. Goldbach's Conjecture asks whether every even number can be written as a sum of two of these numbers. A famous proof involving these numbers involves assuming there are only finitely many of them, then asking what divides the number one greater than their product. That proof by contradiction was used by Euclid to demonstrate their infinitude. For 10 points, identify these numbers like 11, 13, and 17, which are only divisible by one and themselves.
A theorem about these entities states that the number of them below x is grows as x
prime numbers