Lychrel Number

A Lychrel number is a natural number that cannot form a palindrome through the iterative process of reversing its digits and adding the result to the original number. The process continues by taking the result and repeating the same operation: reversing its digits and adding it again, in a repeated attempt to reach a palindrome.

Lychrel Number Process Example

For a number like 56: Reverse the digits: 56 → 65 Add the result to the original number: 56 + 65 = 121, which is a palindrome. For the number 196, no palindrome has been found, despite extensive attempts, making it a famous Lychrel candidate.