6988699669998001

This number is a prime.

                                                           698869 9669998001

+ The smallest invertible prime p containing all of the invertible digits {0, 1, 6, 8, 9} formed by the concatenation of four consecutive four-digit invertible -digit non-prime numbers, i.e., {6988||6996||6999||8001}. [Bajpai]

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