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A prime number formed by concatenating three consecutive three-digit palindromic primes whose sum (313 + 353 + 373) is prime, as well as the sum of all nine digits. Note that the sum of digits in 313, 353, and 373, produce three consecutive primes. [Gallardo]


  Submitted: 2006-09-19 16:39:38;   Last Modified: 2008-01-30 11:28:00.

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