The book is now available! 11917049
(another Prime Pages' Curiosity)
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Replace any single digit of 11917049 with a 3 and the result is always prime. It is the only eight-digit prime with this property. [Luhn]


  Submitted: 2001-01-30 17:04:37;   Last Modified: 2008-01-30 11:19:30.

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