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Is 123 prime or composite?
123 is a composite number because it is divisible by 3. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1, 2, and 0. 1, 2, and 0 have a different name.
What is the name of the largest number with a name?
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
How many zeros are in a goololplex?
There are one hundred zeros in a googolplex. This is the largest number in the entire world with a name.
Name the prime number between 25 and 30?
29
Who was number 21?
I can't remember his name offhand, but I remember seeing him between number 20 and number 22.
