Abundant Numbers
23rd
Abundant Numbers (Long)
16th
Arithmetic Numbers
15th
Collatz
26th
Divisors
41st
Evil Numbers
42nd
27th
1st
Evil Numbers (Long)
35th
23rd
29th
Fibonacci
101st
Fizz Buzz
30th
Fractions
23rd
Intersection
26th
Leap Years
126th
Niven Numbers
97th
Niven Numbers (Long)
21st
Odious Numbers
59th
30th
Odious Numbers (Long)
37th
21st
Pernicious Numbers
80th
Pernicious Numbers (Long)
28th
Prime Numbers
84th
179th
Prime Numbers (Long)
42nd
27th
104th
π
31st
7th
291st
φ
199th
√2
285th