The book is now available! 17
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

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Emirp 17 yields three other emirps if 1, 7, and 1+7 zeros are sandwiched between its digits. Obviously, the same can be said of emirp 71. [Silva]


  Submitted: 2010-01-17 20:07:26;   Last Modified: 2010-01-18 12:21:00.

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