256 (two hundred [and] fifty-six) is the natural number following 255 and preceding 257.

← 255 256 257 →
Cardinaltwo hundred fifty-six
Ordinal256th
(two hundred fifty-sixth)
Factorization28
Greek numeralΣΝϚ´
Roman numeralCCLVI
Binary1000000002
Ternary1001113
Senary11046
Octal4008
Duodecimal19412
Hexadecimal10016

In mathematics

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256 is a composite number, with the factorization 256 = 28, which makes it a power of two.

  • 256 is 4 raised to the 4th power, so in tetration notation, 256 is 24.[1]
    • 256 is the value of the expression  , where  .
  • 256 is a perfect square (162).
  • 256 is the only 3-digit number that is zenzizenzizenzic. It is 2 to the 8th power or  .
  • 256 is the lowest number that is a product of eight prime factors.
  • 256 is the number of parts in all compositions of 7.[2]

In computing

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One octet (in most cases one byte) is equal to eight bits and has 28 or 256 possible values, counting from 0 to 255. The number 256 often appears in computer applications (especially on 8-bit systems) such as:


References

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  1. ^ "Power Tower." MathWorld. Archived April 27, 2014, at the Wayback Machine
  2. ^ Sloane, N. J. A. (ed.). "Sequence A001792". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  3. ^ "ASCII character chart." Microsoft. Archived January 19, 2013, at the Wayback Machine
  4. ^ "Windows 28591." Microsoft. Archived July 24, 2013, at the Wayback Machine
  5. ^ "Improving Performance in Excel 2007: The ‘Big Grid’ and Increased Limits in Excel 2007." Microsoft. Archived December 7, 2013, at the Wayback Machine
  6. ^ "Google Search Engine Tools Results". Retrieved 10 September 2015.