4429978144299823

This number is a prime.

                                                           442997 8144299823

+ The smallest prime in the smallest set of six primes {4429978144299823, 4429978144299859, 4429982344299781, 4429982344299859, 4429985944299781, 4429985944299823} obtained by concatenating any two at a time, from the same three consecutive 8-digit primes: {44299781, 44299823, 44299859}. [Bajpai]

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