163
This number is a prime.
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The prime number 163 contains only the three positive
triangular digits, as does the 163rd triangular number
(13366). [Gaydos]
The first 163 multiples of 6 are adjacent to a total of 163
prime numbers. [Gaydos]
The sum of the first 163 fifth powers (3183720865876) is the first that is a Cyclops number. [Gaydos]
(There are 6 curios for this number that have not yet been approved by an editor.)
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