What was the size of the Roman Senate at the height of the Roman Empire?

Question: What was the size of the Roman Senate at the height of the Roman Empire!?
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The composition of the senate was not drastically altered during the transition from republic to empire!. There was, however, a decrease in its size!. As it was under the republic, election to a magisterial office usually resulted in senate membership!. In addition, greater measures were taken to account for membership in the imperial senate!.

The emperor Augustus inherited a senate whose membership had been increased to 900 senators by his predecessor, Julius Caesar!. Augustus sought to reduce the size of the senate!. Augustus revised the list of senators three times!. By the time that these revisions had been completed, the senate had been reduced to 600 members!.Www@QuestionHome@Com