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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

## Number to D'ni Numerals Converter

### 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.

 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Note that there is a 26th symbol which is equal to 25 , just like 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.

### 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: 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.

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D'ni Numerals on dCode.fr [online website], retrieved on 2024-06-15, https://www.dcode.fr/dni-numerals

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