fmpz_mod_is_invertible
Synopsis
#include <flint/fmpz_mod.h>int fmpz_mod_is_invertible(const fmpz_t a, const fmpz_mod_ctx_t ctx)sourceReturns 1 if \gcd(a, n) = 1, that is, if a is invertible modulo n, and 0 otherwise. Works for any integer a.
Guides#
Cite this page
The FLINT team, “fmpz_mod_is_invertible (fmpz_mod.h),” FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev, 2026. https://flintlib.org/doc/fmpz_mod/fmpz_mod_is_invertible.html (generated 2026-10-20).
@misc{flint-doc-fmpz-mod-fmpz-mod-is-invertible,
author = {{The FLINT team}},
title = {{fmpz\_mod\_is\_invertible (fmpz\_mod.h)}},
howpublished = {FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev},
year = {2026},
url = {https://flintlib.org/doc/fmpz_mod/fmpz_mod_is_invertible.html},
note = {Generated 2026-10-20}
}