Arabic to Roman
1,000
Christmas Trees
576
Divisors
971
1,000
Evil Numbers
857
Fibonacci
897
947
704
Happy Numbers
857
Leap Years
980
Niven Numbers
750
Odious Numbers
1,000
Pascalβs Triangle
750
Pernicious Numbers
913
Prime Numbers
878
1,000
700
Prime Numbers (Long)
1,000
Quine
615
1,000
1,000
1,000
Roman to Arabic
Spelling Numbers
1,000
Ξ»
544
Ο
1,000
861
1,000
Ο
1,000
800
898
Ο
815
β2
929
π
949
958
838
714
623