Arabic to Roman
1st
Christmas Trees
30th
Divisors
47th
1st
Evil Numbers
23rd
Fibonacci
28th
129th
90th
Happy Numbers
14th
Leap Years
8th
Niven Numbers
18th
Odious Numbers
1st
Pascalβs Triangle
32nd
Pernicious Numbers
33rd
Prime Numbers
28th
1st
67th
Prime Numbers (Long)
1st
Quine
114th
1st
1st
1st
Spelling Numbers
1st
Ξ»
35th
Ο
1st
42nd
1st
Ο
1st
45th
4th
Ο
8th
β2
11th
π
5th
10th
42nd
6th
201st