91Ó°ÊÓ

Find the odd primes that have 7 as a quadratic residue. Express your answer as a set of congruence classes modulo 28 .

Solve \(x^{2} \equiv 3(\bmod 11)\)

Solve \(x^{2} \equiv 3(\bmod 13)\)

Solve \(x^{2} \equiv 3(\bmod 143)\)

Solve \(x^{2} \equiv 41(\bmod 64)\)