256

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 n n {\displaystyle n^{n}}, where n = 4 {\displaystyle n=4}. 256 is a perfect square (162). 256 is the only 3-digit number that is zenzizenzizenzic. It is 2 to the 8th power or ( ( 2 2 ) 2 ) 2 {\displaystyle ((2^{2})^{2})^{2}}. 256 is the lowest number that is a product of eight prime factors. 256 is the number of parts in all compositions of 7.