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Find a nonpalindromic number that when multiplied with its reversal becomes palindromic.
The numbers 12 and 102 already are valid candidates :

12 x 21 = 252
102 x 201 = 20502

Other solutions are e.g. 112, 1112

Guessing other numbers should be easy once you discover the hidden pattern !

A000044 Prime Curios! Prime Puzzle
Wikipedia 44 Le Nombre 44 Numberland 44














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