12 Days of Christmas
173
Abundant Numbers
707
Card Number Validation
589
Collatz
822
Day of Week
776
Evil Numbers
741
Evil Numbers (Long)
726
Fibonacci
602
Fizz Buzz
606
Fractions
667
Leap Years
695
Niven Numbers
710
Niven Numbers (Long)
775
Odious Numbers
687
Odious Numbers (Long)
675
Prime Numbers
553
Prime Numbers (Long)
586
π
134405