10

This number is a composite.

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

+ 11 + 22 + 33 + 44 + 55 + 66 + 77 + 88 + 99 + 1010 is prime. [Kulsha]

+ The 10-bit number (1110101001) containing zeros on prime positions and units on non-prime positions, reading right-to-left, is a binary emirp. [Kulsha]

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