Arabic to Roman
1,000
Christmas Trees
576
Divisors
971
1,000
Evil Numbers
857
Fibonacci
897
947
593
Happy Numbers
800
Leap Years
980
Niven Numbers
722
Odious Numbers
1,000
Pascalβs Triangle
750
Pernicious Numbers
913
Prime Numbers
878
1,000
633
Prime Numbers (Long)
1,000
Quine
615
1,000
1,000
1,000
Roman to Arabic
Spelling Numbers
1,000
Ξ»
200
Ο
926
857
1,000
Ο
897
796
898
Ο
815
β2
857
π
949
958
829
714
623