Several centuries
It is called Centenary.
It is called a "centennial celebration"
A three-hundred-year celebration is called a tricentennial.
bicentennial
He painted about several hundred paintings of dancers on the stage, from 1870 onwards. One of the best known is called L'étoile (the Star), painted in 1878.
The Spartans were at war every few years for several hundred years.
A one-hundred-year-old person can be called a Centenarian.
A period of 100 years is a century
There have been several, one was called the Hundred Years War
several hundred is more than 200 but less than 1000
a humpback whale
The two-hundred-year period in Roman history marked by freedom stability and peace was called the Pax Romana.