**William Stein**

*Date:* **Math 124** HARVARD UNIVERSITY **Fall 2001**

This lecture is about the following three questions:

- Are there infinitely many primes? (yes)
- Are there infinitely many primes of the form ? (yes, if )
- How many primes are there? (asymptotically primes less than )

- There are infinitely many primes
- Primes of the form
- How many primes are there?
- About this document ...

William A Stein 2001-09-19