Arabic to Roman
977
Christmas Trees
531
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
607962
945
Roman to Arabic
Spelling Numbers
1,000
λ
501
π
890
974864
τ
822
966768
φ
759
√2
871
𝑒
665882912798605