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# Trillion factorial !!

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Here is a very difficult question: what are the first 10 digits of "one trillion factorial", or  "10^12!"

Thank you.

Guest Sep 29, 2017
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### 3+0 Answers

#1
+17711
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101  =  10

102  =  100

103  =  1000

...

Thus, the first 10 digits of  1012!  =  1 000 000 000  ...

geno3141  Sep 30, 2017
#2
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If you meant (10^12)! =1,000,000,000,000!, then that is a different question. Fortunately, the mighty

Wolfram/Alpha can compute the first dozens of digits directly. So:

(10^12)! =1.40366116037375609072013386771345056395992457... × 10^11565705518103

So the number begins with: 1403661160373.........etc.

Guest Sep 30, 2017
#3
+91773
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I take the first 10 digits to be the first 10 from the right.  Given this definition then the answer will be 0000000000

Melody  Sep 30, 2017

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