Arabic to Roman
1st
Christmas Trees
30th
Divisors
47th
1st
Evil Numbers
23rd
Fibonacci
28th
131st
95thHappy Numbers
14th
Leap Years
8th
Niven Numbers
18th
Odious Numbers
1st
Pascalβs Triangle
32nd
Pernicious Numbers
33rd
Prime Numbers
28th
1st
69thPrime Numbers (Long)
1st
Quine
114th
1st
1st
1st
Spelling Numbers
1st
Ξ»
35th
Ο
3rd
42nd
1st
Ο
3rd
45th
4th
Ο
8th
β2
11th
π
5th
12th
42nd
6th
208th