4294967040

4294967040 is a 32-bit unsigned integer whose decimal value is 2^32 minus 256. In hexadecimal it is 0xFFFFFF00, and in binary it is 11111111 11111111 11111111 00000000. This places it near the upper end of the 32-bit unsigned range, which spans from 0 to 4294967295. If interpreted as a signed 32-bit integer, 4294967040 corresponds to −256 due to two’s complement representation.

In networking, 0xFFFFFF00 is commonly associated with the IPv4 subnet mask 255.255.255.0, the standard mask for a /24 network. A /24 network contains 256 addresses, ranging from the network address to the broadcast address, with typically 254 usable host addresses in many configurations. The decimal form 4294967040 is sometimes used in low-level configurations or programmatic handling of IP masks that are processed as 32-bit integers.

In computing and programming, 4294967040 may appear in bitwise operations, memory addressing, and mask computations. It exemplifies how 32-bit values wrap around and how signed versus unsigned interpretations can change the understood value (for example, −256 when treated as signed).

Related values include 4294967295, the maximum 32-bit unsigned value (0xFFFFFFFF). 4294967040 is exactly 255 less than that maximum, reflecting its 0xFFFFFF00 form and its role as a full 24-bit mask in the lower three bytes.