Senary is the base-6 numeral system, using the digits 0, 1, 2, 3, 4, and 5. In expanded notation, a senary numeral 
represents the nonnegative
integer
where each 
is a digit value from 0 to 5. For example, 
in decimal.
The place values of the fractional part are the
negative powers 
, 
,
....
The senary digit strings for successive nonnegative
integers, beginning with 0, are 0, 1, 2, 3, 4, 5, 10, 11, 12, ... (OEIS A007092).
See also
Base,
Decimal,
Digit,
Expanded Notation,
Numeral System
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References
De Vlieger, M. T. "Multiplication Tables of Various Bases." Updated Nov. 24, 2014. https://dozenal.org/drupal/sites_bck/default/files/MultiplicationSynopsis.pdf.Math
Is Fun. "Number Bases." https://www.mathsisfun.com/numbers/bases.html.Sloane,
N. J. A. Sequence A007092 in "The
On-Line Encyclopedia of Integer Sequences."
Cite this as:
Weisstein, Eric W. "Senary." From MathWorld--A
Wolfram Resource. https://mathworld.wolfram.com/Senary.html
Subject classifications
