17
This number is a prime.
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When concatenating the natural numbers in order (known as
Chapernowme
constant), curiously the first 5 digits of π emerge at
just the 17th position (123456789101112131415). [Gudipati]
Exactly 17 swaps are needed to bubble sort
SEVENTEEN. (the only other such prime is 2) [Gudipati]
(There is one curio for this number that has not yet been approved by an editor.)
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