Wei Feng network January 20, for an elementary and middle school math classes for people who listen, I believe that would at least know what the concept of prime numbers is. Of course, here is simple to explain better, Prime number, also known as prime numbers, composite numbers, if other than itself and 1, not divisible by any other number, then that number is called a prime number. Among them, the smallest prime number is 2. And the largest, in theory, such a number is infinite.
Of course, even though in theory it is endless, but if big enough, it is very difficult to calculate. Also, this type of numbers always catch the eye of mathematicians. Famous Goldbach's conjecture, after all, is made in accordance with this concept, and the well-known mathematician Chen jingrun proved just the 1+2 is enough to honor all my life, and its influence can be seen. Ted Baker iPhone 6 Case
Now, the Prime news stories. Of course, not proved out of the peak--1+1=2 the legend of Goldbach's conjecture. But mathematicians after January 25, 2013, will refresh the largest known prime number again. Exact numbers about how much is here, of course, is to write it down,. Found as early as 2013, the former largest prime number is a number 17,425,170. And now, scientists have newly discovered the largest prime number of 22,338,618 is even more staggering.
Small series of rough calculation, if the rate of writes per second 3 digits even not eating keeps writing, finished the largest prime number 2068gexiaoshi39fen of the time, which is 86 days. So large a number, even if it is through the computer's help, to figure out that it is a prime number is very difficult.
Such a large number, only copy it again, acid, and just terrible. Ted Baker iPhone 6 cases
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