I am posting my lecture notes here. They are scanned in versions of my handwritten notes, so it may be difficult to read them. I will post them fairly regularly so that you do not have to take notes in class if you so choose. However, if I find that people are not attending class and using these as a substitute, I will stop posting them.

• Introduction
• Division and basic results
• Introduction to the theory of congruences
• Fermat's little theorem
• Public-key cryptography
• Primitive roots
• Quadratic congruences
• Elliptic curves and congruent numbers
• Continued fractions and Pell's equation
• Fermat's last theorem