Badulla Badu Numbers-------- -

Introduction to Badulla Badu Numbers

• ( S(N) = ) sum of digits of ( N ) in base ( b )
• ( L(N) = ) number of digits of ( N ) in base ( b ) (i.e., ( \lfloor \log_b N \rfloor + 1 ))

Country Code: To call any number in Badulla from abroad, use the Sri Lanka country code +94. Badulla Badu Numbers--------

However, to distinguish from the well-known "196-algorithm" (reverse and add until a palindrome), we propose a stricter condition: The reverse-add operation must yield a number whose digits alternate symmetrically in a specific "Badulla-Badu" pattern—meaning the first and last digits differ by exactly 1, the second and second-last differ by 2, etc. Introduction to Badulla Badu Numbers

Open Questions

1. Can the definition be relaxed to produce an infinite family of Badulla Badu Numbers?
2. Do they have any application in cryptography or error detection?
3. Is the name intentionally designed to be unfindable by search engines (like “Badulla Badu Numbers” returns zero serious results)?

: These "numbers" are frequently circulated in private or public social media groups (such as Facebook or Telegram) where users seek contact information for specific types of services or casual relationships in the Badulla area. Official Indicators ( S(N) = ) sum of digits of

The Modern Resurrection

In 2023, a team at the University of Moratuwa fed Badu’s original 67 numbers into a neural network. They were looking for randomness. Instead, they found anti-chaos.