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Sep 6, 2016 at 7:03 vote accept Nilotpal Kanti Sinha
Sep 6, 2016 at 7:03
Aug 25, 2016 at 15:52 comment added Gerhard Paseman You might consider gathering more data for larger $x$. I note that prime power values for the number of nondivisors are also relatively low. You might be able to explain the distribution by looking at the distribution of the relative block sizes (compare the exponents in the factorizations of n-1 and gcd(n-1,\phi(n))). Gerhard "Data Isn't Always Number Shaped" Paseman, 2016.08.25.
Aug 25, 2016 at 15:40 history edited Gerhard Paseman CC BY-SA 3.0
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Aug 25, 2016 at 15:35 history answered Gerhard Paseman CC BY-SA 3.0