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A 'googol' is 10 to the power of 100. Or a one, with one hundred zeros following it. The google people spelled it that way on purpose, so they could trade mark it. I've got the limited edition Dilbert as a google logo mug hanging on my wall.

(A googolplex is 10 with a googol zeros following it. And I've heard there aren't enough particles in the universe to count that high).