The largest real number that has been named is googolplex. What about 10^googolplex or googolplex^googolplex?
The answer comes from the theory of non-computable functions. Scott Aaronson from MIT has a brilliant essay about it.
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Infinity. Infinity is not a finite number, and hence is not the largest number theoretically. Several large numbers exist, such as Googol and Googolplex. But the largest of them all is the - Graham's number. It is so large that you cannot write simply by the means of exponentiation or tetration. Source - http://en.wikipedia.org/wiki/Graham's_number
All real numbers are finite. Infinity is not a number.All real numbers are finite. Infinity is not a number.All real numbers are finite. Infinity is not a number.All real numbers are finite. Infinity is not a number.
In mathematics, a finite set is a set that has a finite number of elements. For example, (2,4,6,8,10) is a finite set with five elements. The number of elements of a finite set is a natural number (non-negative integer), and is called the cardinality of the set. A set that is not finite is called infinite. For example, the set of all positive integers is infinite: (1,2,3,4, . . .)
A finite set has a finite number of elements, an infinite set has infinitely many.
Well, honey, the number of countries in the world is finite. Last time I checked, there were 195 countries recognized by the United Nations. So unless aliens start setting up embassies, we're not gonna see an infinite number of countries anytime soon.