Present 2016!

Number Theory Level 5

Find the last four non-zero digits of 2016 ! 2016 ! .

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Notation : ! ! denotes the factorial notation. For example, 8 ! = 1 × 2 × 3 × ⋯ × 8 8! = 1\times2\times3\times\cdots\times8 .

Inspiration .


The answer is 8704.

Samara Simha Reddy by Samara Simha Reddy , 22, India

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