If in fact we allowed lower case as well but no symbols…there would be
8,114,042,066,856,018,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 combinations
Stars in the universe 1,000,000,000,000,000,000,000,000
If we allowed from 8 -12 characters in the password
97,368,504,802,272,200,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 combinations
If we try the number of atoms in the entire observable universe we get
30,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000
So it’s less than the number of atoms in the observable universe….go hackers!