Stuck a random 6 digit number into Wolfram Alpha to see if it was a prime number; it was.
Chances of sticking a random 6 digit number into Wolfram Alpha (on a
whim*, mind you), and having it turn out to be a prime number?
prime numbers. Divide that by the total number of 6-digit numbers,
(which is, I believe, 1000000-100000), and you get something like
7.6562% chance. Not bad, eh? * somewhat related, there’s a Fallout 3 quest that requires you to
either calculate prime numbers, or read the walkthrough. I know Google
Calc can do something similar, but I punched “prime x” (where x is a
number) into Wolfram Alpha, and lo and behold, it told me that number
was a prime. Later that night, I decided to punch a random 6 digit
prime number in – and voilá, you get the screenshot above.