Factorial/Examples/19

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Example of Factorial

$19! = 121 \, 645 \, 100 \, 408 \, 832 \, 000$


Proof

From $18$ Factorial:

$18! = 6 \, 402 \, 373 \, 705 \, 728 \, 000$

Then:

  6 402 373 705 728 000
x                    19
-----------------------
 57 621 363 351 552 000
 64 023 737 057 280 000
-----------------------
121 645 100 408 832 000

$\blacksquare$