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

#1**+1 **

10^{1} = 10

10^{2} = 100

10^{3} = 1000

...

Thus, the first 10 digits of 10^{12!} = 1 000 000 000 ...

geno3141
Sep 30, 2017

#2**+1 **

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