Following the third, fourth, or fifth digit, every number up through 15 is the account number while that final number, 16, is the check digit. All Discover cards start with the number six and are 16 digits in length, while petroleum cards start with the number seven and airline cards start with the number one.
Vatican City. Vatican City â 0.2 square miles â The worldâs smallest state, the Vatican has a population of 770, none of whom are permanent residents. The tiny country which surrounds St. Peterâs Basilica is the spiritual center for the worldâs Roman Catholics (over 1 billion strong).
Global economy is 1.62 times greater in PPP terms compare to nominal terms. Out of 191 economies, 181 have higher value in PPP basis and 9 have higher in nominal. For United States both values are identical. United States and China would be the largest economy in nominal and PPP, respectively. Tuvalu would be the world's smallest economy in both methods. In exchange rates methods, Largest economy United States shares 24.9 percent of global wealth, while smallest economy Tuvalu contributes only 0.00005 percent. In PPP, 1st ranked China shares 18.3 percent and lowest ranked Tuvalu shares 0.00003 percent.