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5!! or the factorial of the factorial of five is a positive integer equal to 120!. It has 199 digits; its full decimal expansion is:

6689502913449127057588118054090372586752746333138029810295671352301633557244962989366874165271984981308157637893214090552534408589408121859898481114389650005964960521256960000000000000000000000000000
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