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(17*10^4885-71)/99 is (as of 27 October 2002) the largest known example of a smoothly undulating palindromic prime. The proof was done using Marcel Martin's Primo which required 2008 hours and 57 minutes on a AMD Athlon 1.33 GHz. The Primo certificate was then validated (an additional 25 hours and 11 minutes) with Cert_Val. [Rosenthal and Martin]

 

  Submitted: 2003-01-02 16:21:57;   Last Modified: 2008-09-01 15:50:00.



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