Arabic to Roman
979
Christmas Trees
532
Divisors
911942
Evil Numbers
820
Fibonacci
859
932679
Happy Numbers
806
Leap Years
930
Niven Numbers
721
Odious Numbers
947
Pascal’s Triangle
723
Pernicious Numbers
864
Prime Numbers
830987
670
Prime Numbers (Long)
974
Quine
606962
945
Roman to Arabic
Spelling Numbers
1,000
λ
501
π
889
973863
τ
822
966768
φ
755
√2
871
𝑒
665882912798605