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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

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353 is the smallest multi-digit palindromic prime that produces two more palindromes when its prime index, 71, is subtracted or added to it. The next such palindromic prime is 73637. Are there any more? [Gaydos]

 

  Submitted: 2016-05-08 11:10:08;   Last Modified: 2019-04-06 18:26:51.



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