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keisanHigh-precision calculations for everyday life and work

Searching for Lychrel numbers

Author: tonagaiExecutions: 9721

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If you reverse 56 to make 65 and add them together, you get 121—a palindromic number.By repeating this process—for example, 57 → 57 + 75 = 132 → 132 + 231 = 363—it becomes a palindromic number in two steps; 89 takes 24 steps, and 10911 takes 55 steps to become a palindromic number. Lychrel numbers are those that never become palindromic, no matter how many times you repeat the process.196 is the smallest candidate.
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