World!OfNumbers |
WON plate 161 | |
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10 Only three pairs are known so far and all have palindromic Can you discover the fourth pair ? Note that between the minus and plus values Powers of Ten in the real world
13431 can be expressed as the product 13431 is a palindrome n such that 10n01 is a prime. (A099744)
Jason Earls submitted to the PRP Record site these curious numbers: 10 Note that 1777771 is a PDP or a Plateau Prime.
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A000161 Prime Curios! Prime Puzzle Wikipedia 161 Le nombre 161 |

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