NUMBERS

Note that, in some fonts, the digits ??? are easily misidentified and some implementations of higher bases exchange other, non-alphabetic characters for them. In that case, the names of those systems are often called something else, e.g., Base62ner(???).

Array of digits for bases up to 62

@Number::More::dec2digit = <
   0 1 2 3 4 5 6 7 8 9
   A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
   a b c d e f g h i j k l m n o p q r s t u v w x y z
   >;

Hash of reversed mapping of the array above

%Number::More::digit2dec = [
   0 =>  0, 1 =>  1, 2 =>  2, 3 =>  3, 4 =>  4, 5 =>  5, 6 =>  6, 7 =>  7, 8 =>  8, 9 =>  9,
   A => 10, B => 11, C => 12, D => 13, E => 14, F => 15, G => 16, H => 17, I => 18, J => 19,
   K => 20, L => 21, M => 22, N => 23, O => 24, P => 25, Q => 26, R => 27, S => 28, T => 29,
   U => 30, V => 31, W => 32, X => 33, Y => 34, Z => 35, a => 36, b => 37, c => 38, d => 39,
   e => 40, f => 41, g => 42, h => 43, i => 44, j => 45, k => 46, l => 47, m => 48, n => 49,
   o => 50, p => 51, q => 52, r => 53, s => 54, t => 55, u => 56, v => 57, w => 58, x => 59,
   y => 60, z => 61
];

Names for some common base numbers [Ref 6.]

References

1. Standard positional number systems

2. Positional number systems

3. Positional base conversion

4. Base

5. Table of bases 2..36 for decimal values 0..256

6. Radix

7. List of numeral systems

8. Simple conversion algorithms