The book is now available! 131
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

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131 is the smallest pallindromic prime that remains so by inserting the following same digit d six times between its adjacent digits, one at a time, for d = 0, 1, 3, 4, 6, 9 (6 times): 10301 = prime 11311 = prime 13331 = prime 14341 = prime 16361 = prime 19391 = prime. [Rivera]

 

  Submitted: 2018-07-04 17:21:30;   Last Modified: 2018-12-13 08:47:07.



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