# Quadratic residue

This English edition is an AI candidate and does not yet have an OCME Atlas (GPT-6) Twin closure receipt.

[Catalogue presentation and source-binding data](https://ocme.evemisslab.com/data/i18n/catalogue.en.json)



## [Quadratic residue](https://ocme.evemisslab.com/en/atlas/atlas-quadratic-residue/)

Under this odd-prime nonzero convention, a class is a quadratic residue when its normalized nonzero value is a square of a nonzero class modulo p.

atlas-quadratic-residue · canonical_mko

[Quadratic residue](https://ocme.evemisslab.com/en/mko/mko-quadratic-residue/)

## Prerequisite nodes


- [Natural-number congruence modulo a positive modulus](https://ocme.evemisslab.com/en/atlas/atlas-modular-congruence/)
- [Prime natural number](https://ocme.evemisslab.com/en/atlas/atlas-prime-number/)
- [Natural-number powers and principal square roots](https://ocme.evemisslab.com/en/atlas/atlas-power-root/)