12123...04247 (117-digits)

This number is a prime.

                         1212378 5042471213 7434109631 2205833127 0312219543
6937112281 3683082912 2195436937 1122058331 2703121374 3410963121 2378504247

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The smallest prime formed from the concatenation of the cubes of n consecutive n-digit primes in the pattern {a^3, b^3, c^3, d^3, e^3, d^3, c^3, b^3, a^3}, i.e., {10663^3, 10667^3, 10687^3, 10691^3, 10709^3, 10691^3, 10687^3, 10667^3, 10663^3}, (case n=5). [Bajpai]