- GCD and LCM
- Prime Factorization and Divisors
- Fibonacci Numbers
- Catalan Numbers
- Modular Arithmetic
- Euler Totient Function
- nCr Computations
- Set Theory
- Chinese Remainder Theorem
- Factorial
- Prime numbers and Primality Tests
- Sieve Algorithms
- Divisibility and Large Numbers
- Series
- Number Digits
- Triangles
- Algebra
- Number System