- Abundant Number
- Automorphic Number
- Binary to Decimal
- Decimal to Binary
- Deficient Number
- Dudeney Number
- Greatest Common Factor (GCD)
- Happy Number
- Lead Number
- Least Common Multiple (LCM)
- Magic Number
- Peterson Number
- Prime Palindrome Number
- Sunny Number
- Tech Number
- Twin Prime Number
- Twisted Prime Number