Numbers such as 121 and 3773 that read the same forward and backward are called palindromes. Choose any number and repeatedly add it to its reversed form; most numbers become palindromes within just a few steps. Try it yourself.
Process: Choose a number and add its reversed value. If the result is not a palindrome, repeat the same process. (Example: 47 → 47+74=121, a palindrome! Success in just 1 step)
💡 Most numbers reach a palindrome quickly, but 196 is special. Even after billions of reverse-and-add operations, no one has confirmed that it becomes a palindrome. There is also no proof that it never will, making it an unsolved problem known as the "196 problem." For safety, this tool calculates up to 100 steps.