14141...14141 (6343-digits)

This number is a prime.

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As of December 2002, (14*10^6343-41)/99 was the largest smoothly undulating palindrome proven to be prime. [Rosenthal and Broadhurst]

Submitted: 2002-12-23 09:09:54; Last Modified: 2009-05-26 19:45:14.