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# What is the largest number in the world?

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The largest named number in the world is a googolplexian. Because numbers are infinite, and any number can be made larger by simply adding to it, the largest number in the world is defined as the largest number that has a name.

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A googolplexian is described as a “1” with a googolplex of zeroes following it. A googolplex is described as a “1” with a googol zeroes behind it. A googol is equal to a “1” with 100 zeroes following it. Most of these numbers are too large to have any value in equations, and they are rarely, if ever, used by mathematicians.

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## Related Questions

• A:

The Hindu-Arabic number system, which is the system used around the world to represent figures, permits mathematical operations to be made on arbitrarily large numbers. This place-value number system, with its use of zero, uses only 10 distinct digits to represent any number.

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• A:

In math, zero is considered to be an even number. In order to be even, a number must be able to be divided exactly by two. Zero qualifies because zero divided by two equals zero.

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The number one is neither prime nor composite. Prime numbers are positive integers greater than one that are evenly divisible only by themselves and one. Composite numbers are positive integers that have divisors other than themselves and one.