19116...80811 (52-digits)

This number is a prime.

                   19 1161196961 6869896888 8910080011 0689011160 9111180811

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The smallest prime (an emirp also) formed from the concatenation of eight consecutive strobogrammatic primes, i.e., {191161, 196961, 686989, 688889, 1008001, 1068901, 1160911, 1180811}. [Bajpai]