Hexavigesimal
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A Hexavigesimal numeral system has a base of twenty-six.
Base 26 is a fairly natural way of representing numbers as text using the 26-letter Latin alphabet. The number of interest is expressed in base 26, and then the 26 different base-26 digits are identified with letters as 0=A, 1=B, 2=C, ... 25=Z.
This system is of limited practical value, although letters used in nominal or serial numbers can be thought as hexavigesimal numerals for calculation purposes if the entire alphabet is used.
[edit] Use
The worksheet columns in Microsoft Excel are numbered with hexavigesimal labels. Strictly understood, it is in the 26-adic system beginning with A=1, B=2, ... Z=26 ... AA = 27 ...
[edit] Fractions
The fact that 26 is a composite number and lies between two composite numbers (25 and 27) leads to many simple fractions.
B/C = A.N B/D = A.IRIRIRIR... B/E = A.GN B/F = A.FFFFFFF...
The fractions B/G, B/I, B/J, B/K, B/M, B/N, B/P, B/Q are also simple.
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