Here is a very difficult question: what are the first 10 digits of "one trillion factorial", or "10^12!"
Thank you.
101 = 10
102 = 100
103 = 1000
...
Thus, the first 10 digits of 1012! = 1 000 000 000 ...
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.