A duotrigintillion is shorthand for the value 1099, or 1 followed by 99 zeros. It is also called a sexdecilliard and the name triacontatrillion has also been proposed.
... (c. 1467-c. 1520), discovered Brazil and Madagascar
Juan Sebastian del Cano[?] - completed the first circumnavigation, started by Magellan
Diego Cao, (died c. 1486), ...