When 𝑝 ≡ 1 (mod 5), what is (5 | 𝑝)? — The Ross Program

Описание: We begin our quest to understand (𝑞 | 𝑝), i.e., when is 𝑞 a square modulo 𝑝? When 𝑝 ≡ 1 (mod 5), we consider (5 | 𝑝), and when 𝑝 ≡ 1 (mod 7), we consider (-7 | 𝑝).