12 Days of Christmas
172
Abundant Numbers
708
Card Number Validation
587
Collatz
764
Day of Week
779
Evil Numbers
741
Evil Numbers (Long)
728
Fibonacci
602
Fizz Buzz
607
Fractions
669
Leap Years
695
Niven Numbers
710
Niven Numbers (Long)
777
Odious Numbers
688
Odious Numbers (Long)
677
Prime Numbers
553
Prime Numbers (Long)
587
π
135405