Created
May 14, 2011 05:53
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| A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 99. | |
| Find the largest palindrome made from the product of two 3-digit numbers. | |
| ---------- | |
| $ perl -e 'I: for ($I = 999; $I >= 100; --$I) { for ($J = $I; $J >= 100; --$J) { $p = $I * $J; $q = scalar reverse $p; if ($p eq $q) { printf "%8d = %3d * %3d\n", $p, $I, $J; } } }' | sort -n -r | head -1 | |
| 906609 = 993 * 913 |
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