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The year 1013 AD.
17 trillion seconds = approx 540 thousand years.
score like 4 score and 7 years ago our fathers... score like 4 score and 7 years ago our fathers...
One billion seconds ago is roughly the equivalent of 31.7 years ago, using the US definition of one billion. One billion is one thousand millions.
No. The origins of algebra can be traced back to ancient Babylonia mathematicians roughly four thousand years ago.