The book is now available! 15555...22221 (71-digits)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

5555555555 5555555555 5558888888 8888888888 8888882222 2222222222 2222222221
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A dihedral prime of prime length and prime sum of digits. Note also that each of the digits are repeated a prime number of times. [Patterson]


  Submitted: 2003-11-21 12:44:23;   Last Modified: 2008-02-03 21:22:42.

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