10899...98891 (27-digits)

This number is a prime.

                                               1089988 6110899888 1108998891

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The smallest invertible prime containing all of the invertible digits {0, 1, 6, 8, 9} formed from the concatenation of three consecutive primes, i.e., {108998861||108998881||108998891}. [Bajpai]