Abundant Numbers
15th55th
Abundant Numbers (Long)
12th37th
Collatz
11th179th
Divisors
16th193rd
Emirp Numbers
12th112th
Emirp Numbers (Long)
66th
Evil Numbers
18th138th
Evil Numbers (Long)
16th70th
Fibonacci
50th455th
Fizz Buzz
16th1,077th
Foo Fizz Buzz Bar
14th
Happy Numbers
21st129th
Happy Numbers (Long)
12th74th
Leap Years
15th144th
Niven Numbers
18th1st
Niven Numbers (Long)
17th21st
Odious Numbers
18th124th
Odious Numbers (Long)
16th63rd
Pernicious Numbers
107th
Pernicious Numbers (Long)
65th
Prime Numbers
16th280th
Prime Numbers (Long)
19th133rd