A more exact disquisition about the residues remaining from the division of squares and of higher powers by prime numbers
Euler opens by noting the symmetry in the sequence of quadratic residues, then covers some of the group-theoretic properties. The material is similar to that of E242. In section 46, he looks at higher-power residues. In section 48 he returns to primitive roots.
Original Source Citation
Opuscula analytica, Volume 1, pp. 121-156.
Opera Omnia Citation
Series 1, Volume 3, pp.513-543.