698908090691

This number is a prime.

                                                               69 8908090691

+ The smallest invertible prime containing all of the invertible digits that is the sum of six consecutive triangular numbers, i.e., (116483475111 + 116483957778 + 116484440446 + 116484923115 + 116485405785 + 116485888456). [Bajpai]

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