World!Of Numbers |
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1001, a Scheherazade palindrome ! 1001 is the twenty-sixth pentagonal number ! 26*(3*26-1)/2 (Sloane's A000326) A nice finite pattern can be made with 1001 The following property of 1001 was discovered by [G. L. Honaker, Jr.] 1001 = 7 * (11+13+17+19+23+29+31) [Prime Curios!] Who can find the third palindromic solution ? The largest (probable) prime of 326, 3191, 3419, etc. digits is made with
10326 1001
103191 1001 103419 1001 103546 1001 107866 1001 1012189 1001 1012687 1001 1015132 1001 1015167 1001 1016366 1001 1018138 1001 | |||
A000031 Prime Curios! Prime Puzzle Richard Phillips Wikipedia 31 Le Nombre 31 Numberland 31 |
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