# Legendre's constant

> English word · Proper noun

## Definitions
1. A mathematical constant occurring in a formula to approximate the behavior of the prime-counting function π(x), originally chosen to be 1.08366 but now known to be exactly 1.

## Etymology
Introduced by Adrien-Marie Legendre.

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