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53 (another Prime Pages' Curiosity) |
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Single Curio View: (Seek other curios for this number) 53 is the smallest prime p such that 1p1, 3p3, 7p7 and 9p9 are all prime. [Dale]
Submitted: 1999-09-02 18:40:00; Last Modified: 2008-01-30 11:28:00.
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