Researchers from the university of central Missouri in Warrensburg in the second week of february 2013 discovered the largest prime number of the world,beating an earlier record of largest prime number by more than 4 million digits.how many digits does the newly identified prime number carries?
A Swedish think tank,stockholm international peace research institute in the month of march 2013 mentioned china as the world,s fifth largest arms exporter after US,russia germany and france,which of the following countries are the top five largest importers of arms?
