10465...42399 (49-digits)

This number is a prime.

                       104652710 4554710455 0710443471 0438491042 6311042399

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The smallest prime formed from the reverse concatenation of n consecutive n-digit pernicious Honaker primes, i.e., {1046527, 1045547, 1045507, 1044347, 1043849, 1042631, 1042399}, (case n=7). [Bajpai]