1001111111001

1001111111001 is a binary numeral consisting of 13 bits. It forms a palindromic pattern, reading the same from left to right and from right to left. The sequence begins and ends with a 1 and exhibits symmetry around its center, which makes it a common example in discussions of binary palindromes.

When interpreted as a base-2 integer, it equals 5113 in decimal and 0x13F9 in hexadecimal. This value is prime, which means the binary palindrome represents a prime number in base-2. The combination of being both a palindrome and a prime is of particular interest in some areas of recreational number theory and computer science.

In usage terms, binary palindromes like this one are often cited as simple illustrations of symmetry in digital representations. They can serve as test patterns in hardware and software, helping to validate correct handling of bit strings, endianness, and palindrome-checking algorithms. While 1001111111001 does not correspond to a widely recognized standard symbol or identifier, its mathematical properties—13-bit length, palindromic form, and primality—make it a compact example for educational purposes and for exploring properties of numbers in different bases.