10101869

This number is a prime.

+ The smallest Honaker prime containing all of the invertible digits {0, 1, 6, 8, 9}; when rotated by 180 degrees (10101869 -> 69810101) it remains a Honaker prime. [Bajpai]

+ The smallest Honaker prime P, containing all of the strobogrammatic digits {0, 1, 6, 8, 9}, yields another Honaker prime Q when rotated by 180 degrees. Curiously, P and Q both are expressible as the sum of two squares. [Bajpai]

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