9199999999

This number is a prime.

Just showing those entries submitted by 'Beedassy': (Click here to show all)

+ The only near-repdigit prime with non-prime digits d used exactly d times each. Note that this prime remains prime when adjacent digits are wedged apart by pairs of digit 0 inserted throughout in palisades: 9001009009009009009009009009. [Beedassy]

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