Arithmetic Numbers
730
Card Number Validation
602
Collatz
845
Divisors
769
Evil Numbers
1,000
Evil Numbers (Long)
1,000
Leap Years
692
Leyland Numbers
875
Look and Say
955
Niven Numbers
840
Niven Numbers (Long)
852
Odious Numbers
1,000
Odious Numbers (Long)
1,000
Pernicious Numbers
729
Pernicious Numbers (Long)
823
Prime Numbers
1,000
1,000
Prime Numbers (Long)
1,000
Smith Numbers
708
United States
920
π
536