12 Days of Christmas
173
Abundant Numbers
708
Card Number Validation
585
Collatz
823
Day of Week
778
Evil Numbers
741
Evil Numbers (Long)
727
Fibonacci
602
Fizz Buzz
607
Fractions
668
Leap Years
695
Niven Numbers
710
Niven Numbers (Long)
776
Odious Numbers
688
Odious Numbers (Long)
676
Prime Numbers
553
Prime Numbers (Long)
587
π
134405