Abundant Numbers
729
Arithmetic Numbers
837
Christmas Trees
681
Collatz
851
Divisors
655
Emirp Numbers
593
Emirp Numbers (Long)
667
Evil Numbers
889
Evil Numbers (Long)
872
Fibonacci
947
Fizz Buzz
983
Foo Fizz Buzz Bar
1,000
Kaprekar Numbers
155
Niven Numbers
721
Niven Numbers (Long)
794
Odious Numbers
870
Odious Numbers (Long)
872
PalindromemordnilaP
816
Pernicious Numbers
769
Pernicious Numbers (Long)
813
Prime Numbers
656
Prime Numbers (Long)
698
Tongue-twisters
500