Factorial/Examples/22

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Example of Factorial

$22! = 1 \, 124 \, 000 \, 727 \, 777 \, 607 \, 680 \, 000$


Proof

From $21$ Factorial:

$21! = 51 \, 090 \, 942 \, 171 \, 709 \, 440 \, 000$

Then:

   51 090 942 171 709 440 000
x                          22
-----------------------------
  102 181 884 343 418 880 000
1 021 818 843 434 188 800 000
-----------------------------
1 124 000 727 777 607 680 000   

$\blacksquare$