The book is now available! 9999999900000001
(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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91 is composite, 9901 is prime, 999001 is composite, 99990001 is prime, 9999900001 is composite, 999999000001 is prime, 99999990000001 is composite, 9999999900000001 is prime. Unfortunately, the next two terms in this sequence are each composite. [Beiler]


  Submitted: 1999-09-02 18:40:00;   Last Modified: 2008-06-24 08:44:11.

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