11232...53511 (49-digits)

This number is a prime.

112321111 2621111292 1111343111 1454111150 5111153511

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The smallest concatenation of seven consecutive seven-digit palindromic primes that is prime. [Patterson]

Submitted: 2003-05-28 12:29:02; Last Modified: 2008-01-30 17:28:00.