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D'ni Numerals

Tool to convert numbers from/to D'ni numerals (from Myst/Riven games) that uses square symbols and a base 25.

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D'ni Numerals -

Tag(s) : Numeral System, Symbol Substitution

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D'ni Numerals

D'ni to Decimal Converter

See also:

Number to D'ni Numerals Converter


See also:

Answers to Questions (FAQ)

What are D'ni numerals? (Definition)

D'ni numeration is a fictional number system used in the Myst and Riven series of video games which has the mathematical particularity of counting in base 25.

How to convert a number into D'ni?

The D'ni numeral system uses the base 25 to count and therefore has 25 symbols.

char(48)0char(49)1char(50)2char(51)3char(52)4
char(53)5char(54)6char(55)7char(56)8char(57)9
char(9321)10char(9322)11char(9323)12char(9324)13char(9325)14
char(9326)15char(9327)16char(9328)17char(9329)18char(9330)19
char(9331)20char(9461)21char(9462)22char(9463)23char(9464)24

Note that there is a 26th symbol which is equal to 25 char(9465), just like char(49)char(48) is also 25.

To convert a number (integer, in decimal writing), start by writing it in base 25 (see writing in base N), then substitute each value (between 0 and 24) by the corresponding D'ni symbol.

Example: $ 123_{(10)} = 4 \times 25 + 23 = [4,23]_{(25)} $ i.e. char(52)char(9463)

How to convert a D'ni number into decimal?

The conversion begins by replacing each symbol of the base 25 D'ni by its value (between 0 and 24) then processing the number obtained as written in base 25 in order to convert it to base 10 (decimal).

Example: char(52)char(9463) matches the digits $ 4 $ and $ 23 $, i.e. $ [4,23]_{(25)} $ hence the conversion calculation $ 4 \times 25 + 23 = 123 $ in base 10.

How to recognize D'ni digits? (Identification)

The D'ni numeric symbols are square and have inside either lines (horizontal, vertical or diagonal) or arcs of circles connecting 2 adjacent corners.

Any references to Myst and Riven video games are clues.

Source code

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