Factorial/Examples/15

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Example of Factorial

$15! = 1 \, 307 \, 674 \, 368 \, 000$


Proof

From $14$ Factorial:

$14! = 87 \, 178 \, 291 \, 200$

Then:

   87 178 291 200
x              15
------------------
  435 891 456 000
  871 782 912 000
-----------------
1 307 674 368 000

$\blacksquare$