256 (number)

256 is the natural number following 255 and preceding 257.

In mathematics

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.
* 256 is the value of the expression, where.
256 is a perfect square.
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.
In computing

One octet 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 such as:

The typical number of different values in each color channel of a digital color image .
The split-screen level in Pac-Man, which results from the use of a single byte to store the internal level counter.
A 256-bit unsigned integer can represent up to 115,792,089,237,316,195,423,570,985,008,687,907,853,269,984,665,640,564,039,457,584,007,913,129,639,936 values.
The number of bits in the SHA-256 cryptographic hash.