

The Arabic Number System: Base10
The D'ni number system is very different from the one we're used to. In our Arabic system, we can count up from zero to nine with single digits. To count higher than nine, we need two digits. The digit in the tens place tells us how many times we've cycled zero through nine, that is how many times ten is in the number, while the digit in the units place tells us where we are in the current cycle of zero through nine. Once we've hit ninetynine, to count higher, we need a third digit for hundreds; then a fourth for thousands; and so on. This number system that we're used to is called base10 — that is, each place in a number is ten times larger than the previous one. The tens place is ten times bigger than the units (10 = 10 x 1), the hundreds place ten times bigger than the tens (100 = 10 x 10), the thousands place ten times bigger than the hundreds (1000 = 100 x 10), and so on. For a practical example, let's look at the number 9017.
We see that each place is ten times larger than the previous one. The digit that is in each place tells us how many times that place occurs in the number: there are 9 thousands, 0 hundreds, 1 ten, and 7 units. When we multiply out (as in the diagram) and then add together, we get the number itself: 9000 + 000 + 10 + 7 = 9017.
The D'ni Number System: Base25
Unlike our Arabic system, D'ni uses a base25 numbering system. This means that each place in a number is not ten but twentyfive times bigger than the previous one. To illustrate like we did with Arabic numbers, we start with 1 , 1. If we increase the number so that it requires two digits, 10 (0 is the D'ni number for zero), this new number is not equal to 10, as we would think within the Arabic system; the newly introduced place is twentyfive times bigger than the previous one, 25 x 1 = 25. Thus, the D'ni number 10 is equal to 25 in Arabic terms. Introduce a third place, 100 , and it's twentyfive times bigger than the second, twentyfives place: 25 x 25 = 625. Introduce a fourth, 1000 , and it's twentyfive times bigger yet again: 625 x 25 = 15,625. And so on.
Since D'ni is base25, that must also mean that there are twentyfive basic digits to work with, the same way there are ten basic digits (0 through 9) in base10. These D'ni digits are:
0 = 0 
1 = 1 
2 = 2 
3 = 3 
4 = 4 
5 = 5 
6 = 6 
7 = 7 
8 = 8 
9 = 9 
) = 10 
! = 11 
@ = 12 
# = 13 
$ = 14 
% = 15 
^ = 16 
& = 17 
* = 18 
( = 19 
[ = 20 
] = 21 
\ = 22 
{ = 23 
} = 24 
Let's look at a practical example, like the one above:
We now see that in D'ni, each place is not ten but twentyfive times larger than the previous one. As with Arabic numbers, the digit in each place tells us how many times that place occurs in the number: there are 9 fifteensixtwentyfives, 0 sixtwentyfives, 1 twentyfive, and 7 units. If we multiply out and add together as we did before, we get the value (in Arabic terms) of this D'ni number: 140,625 + 0000 + 25 + 7 = 140,657.
In transliteration, we usually represent these D'ni numbers between square brackets, with each digit separated by a vertical bar: [9  0  1  7].
D'ni Number Words
In English, every number can be written out with words; so too in D'ni, in a pattern that closely mirrors the logic that undergirds the number system. The numbers 0 through 4 are all simple words:
0 
1 
2 
3 
4 
rUn (roon  rún) 
fa (fah  fa) 
brE (bree  brí) 
sen (sehn  sen) 
tor (tor  tor) 
Multiples of five are also simple words:
5 
) 
% 
[ 
vat (vaht  vat) 
nAvU (naivoo  névú) 
hEbor (heebor  híbor) 
riS (rihsh  ri} 
To fill in the numbers in between, we abbreviate the word for the closest but not exceeding multiple and combine it with the word for one through four. Thus, the number six ( 6 ) breaks down into the closest multiple five plus one, vat plus fah: vagafa (vahgahfah  vagafa). (The ga means and, thus the word literally means fiveandone.) Similarly, the number fourteen ( $ ) breaks down into the closest multiple ten plus four, nAvU plus tor: nAgator (naigahtor  négator); and twentytwo ( \ ) is twenty plus two, riS plus brE: rigabrE (rihgahbree  rigabrí).
Find below a table of the D'ni numbers from 1 through  for quick reference ( is an alternative way of writing 10 , 25, when the number carries a special significance):
Dni digit 
Arabic digit 
D'ni word 
Transliteration 
English word 
0 
0 
rUn 
roon  rún 
zero 
1 
1 
fa 
fah  fa 
one 
2 
2 
brE 
bree  brí 
two 
3 
3 
sen 
sehn  sen 
three 
4 
4 
tor 
tor  tor 
four 
5 
5 
vat 
vaht  vat 
five 
6 
6 
vagafa 
vahgahfah  vagafa 
six 
7 
7 
vagabrE 
vahgahbree  vagabrí 
seven 
8 
8 
vagasen 
vahgahsehn  vagasen 
eight 
9 
9 
vagator 
vahgahtor  vagator 
nine 
) 
10 
nAvU 
naivoo  névú 
ten 
! 
11 
nAgafa 
naigahfah  négafa 
eleven 
@ 
12 
nAgabrE 
naigahbree  négabrí 
twelve 
# 
13 
nAgasen 
naigahsehn  négasen 
thirteen 
$ 
14 
nAgator 
naigahtor  négator 
fourteen 
% 
15 
hEbor 
heebor  híbor 
fifteen 
^ 
16 
hEgafa 
heegahfah  hígafa 
sixteen 
& 
17 
hEgabree 
heegahbree  hígabrí 
seventeen 
* 
18 
hEgasen 
heegahsehn  hígasen 
eighteen 
( 
19 
hEgator 
heegahtor  hígator 
nineteen 
[ 
20 
riS 
rihsh  ri 
twenty 
] 
21 
rigafa 
rihgahfah  rigafa 
twentyone 
\ 
22 
rigabrE 
rihgahbree  rigabrí 
twentytwo 
{ 
23 
rigasen 
rihgahsehn  rigasen 
twentythree 
} 
24 
rigator 
rihgahtor  rigator 
twentyfour 
 
25 
fasE 
fahsee  fasí 
twentyfive 
D'ni Numbers Larger Than 24
When we write numbers larger than nine in English, we indicate the place of each digit in words: four thousand eight hundred and ninety three. In similar fashion, D'ni uses suffixes to indicate a digit's place. These suffixes are:
–sE (see  sí) 
10 
25's place 
– ra (rah  ra) 
100 
625's place 
– len (lehn  len) 
1000 
15,625's place 
–mel (mehl  mel) 
10000 
390,625's place 
– blo (blo  blo) 
100000 
9,765,625's place 
Thus, the D'ni number for twentyfive ( 10 ) is a fa in the twentyfives place: fasE. (Note that we never write out the 0 .) Three hundred twentyfive ( #0 ) is a nAgasen in the twentyfives place: nAgasensE. We can also write out numbers with digits in both places — one hundred twentyone ( 4] ) is a tor in the twentyfives place and a rigafa in the units place: torsE rigafa.

