0o12723

0o12723 is an octal numeral, written with the prefix 0o to indicate base 8. This form is used in several programming languages to denote an integer in octal notation, including Python 3, JavaScript (ES6), and Ruby, among others. The digits 1, 2, 7, 2, and 3 are all valid octal digits (0 through 7).

In decimal form, 0o12723 equals 5587. In hexadecimal, it is 0x15D3. The conversion can be seen by summing the octal place values: 1×8^4 + 2×8^3 + 7×8^2 + 2×8^1 + 3×8^0.

Usage contexts vary by language. In Python 3, 0o12723 would be parsed as an octal literal. JavaScript (since ES6) and Ruby likewise recognize the 0o prefix for octal literals. Historically, some languages used a leading 0 to indicate octal, such as C and C++, though that practice can be error-prone and is less common in modern code. In Unix-like systems, octal numbers frequently appear for file permissions, though those are typically written in concise 3-digit groups (for example, 755) rather than longer octal literals.

0o12723 serves primarily as an example of base-8 notation and is valued for illustrating how octal literals map to decimal and hexadecimal values rather than for any particular application.

---