# Book:Archimedes/The Sand-Reckoner

## Archimedes: The Sand-Reckoner

Published $c. 250 BCE$.

### Subject Matter

Archimedes describes a system of notation for designating very large numbers, up to $N^{N^N}$, where $N = 10^8$.

## Historical Note

The Sand-Reckoner by Archimedes was addressed to King Gelon of Syracuse (who appears to have lived some $250$ years earlier).

It is in this book that we learn that Aristarchus of Samos had first proposed a heliocentric universe, nearly $2000$ years before Nicolaus Copernicus.