Elementary Number Theory

Unpublished notes.

1. Constructing Carmichael numbers from perfect numbers.

2. The order of elliptic curve groups associated with curves y² = x³+ B over GF(p), p a prime.

3. The order of elliptic curve groups associated with curves y² = x³+ A*x over GF(p), p a prime.

4. The length of the repeating block in decimal representations of rational numbers.