World!Of Numbers |
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An Interpalindromicum Did you know that we live(d) in a palindromic 11-year interval [ 1991 - 2002 ] Write down the year 2000 in Roman Numerals to discover a Letter Palindrome MM. An entertaining problem : | |||
A000067 Prime Curios! Prime Puzzle Wikipedia 67 Le Nombre 67 Numberland 67 |
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