0×123

0x123 is a hexadecimal number, which is a base-16 numeral system used in computing and digital electronics. In hexadecimal, the digits range from 0 to 9 and the letters A to F, where A represents 10, B represents 11, and so on up to F, which represents 15. The prefix "0x" is commonly used to denote a hexadecimal number in programming and digital contexts.

The number 0x123 can be converted to decimal (base-10) by evaluating each digit's contribution to the total value. Starting from the rightmost digit (the least significant digit), each digit is multiplied by 16 raised to the power of its position index, starting from 0. For 0x123, this would be calculated as follows:

(1 * 16^2) + (2 * 16^1) + (3 * 16^0)

= (1 * 256) + (2 * 16) + (3 * 1)

= 256 + 32 + 3

= 291

Therefore, the decimal equivalent of 0x123 is 291. Hexadecimal is often used in computing because it provides a more human-friendly representation of binary-coded values, making it easier to read and write large binary numbers.