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Old 2020-07-10, 14:02   #3
R.D. Silverman
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"Bob Silverman"
Nov 2003
North of Boston

22×1,871 Posts

Originally Posted by Happy5214 View Post
If I'm understanding you right, you're saying there are no, say, cubic non-residues. Well 4 is a cubic non-residue modulo 7 (there is no x where x^3=4 (mod 7)).
Exercise for the O.P.

If p = 1 mod 6, how many cubic residues does it have? how many non-residues?
What about p = -1 mod 6? Did you bother at all to even try to answer your own question?

Do us all a favor. Don't come back until you take the time to actually do some reading
about this subject. And if you can't be bothered, then don't come back at all.

Your question could have been answered with 15 seconds of thought. But of course
you could not be bothered.
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