0x1FFFF
0x1FFFF is a hexadecimal integer constant. In decimal representation, it is equal to 131071. This value is often encountered in computing contexts, particularly in programming and hardware specifications. Its significance typically arises from its bit pattern. In binary, 0x1FFFF is represented as a sequence of seventeen consecutive '1' bits. This specific arrangement of bits makes it a convenient value for creating masks or representing ranges in memory addressing or bitwise operations. For example, it can be used to select the lowest seventeen bits of a larger data word. The value is one less than 2 raised to the power of 17 (2^17), which is 131072. This relationship is common with hexadecimal numbers composed entirely of F's, where the value is always one less than the next power of two.
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