# Fermat pseudoprime

> English word · Noun

## Definitions
1. With respect to an integer base b, with b > 1, a composite integer n such that bⁿ⁻¹ is congruent to one modulo n.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/fermat-pseudoprime