In the highly complex world of Astronomy, where very huge distances are to be measured special numbers are needed to count.

The presence of Large numbers indicate that knowledge of such huge numbers were necessitated .

That is possible only when Knowledge of such numerals are needed.

And such a field is Astronomy.

Unless one has a very deep insight into the working of the Universe , one would not have devised the numbers and more importantly would not have systematized them.

The largest Number used now ,

”

When a number represents a quantity rather than a count, SI prefixes can be used—thus “femtosecond”, not “one quadrillionth of a second”—although often powers of ten are used instead of some of the very high and very low prefixes. In some cases, specialized units are used, such as the astronomer’s parsec and light year or the particle physicist’s barn.

Nevertheless, large numbers have an intellectual fascination and are of mathematical interest, and giving them names is one of the ways in which people try to conceptualize and understand them.

One of the first examples of this is *The Sand Reckoner*, in which Archimedes gave a system for naming large numbers. To do this, he called the numbers up to a myriad myriad (10^{8}) “first numbers” and called 10^{8} itself the “unit of the second numbers”. Multiples of this unit then became the second numbers, up to this unit taken a myriad myriad times, 10^{8}·10^{8}=10^{16}. This became the “unit of the third numbers”, whose multiples were the third numbers, and so on. Archimedes continued naming numbers in this way up to a myriad myriad times the unit of the 10^{8}-th numbers, i.e., and embedded this construction within another copy of itself to produce names for numbers up to Archimedes then estimated the number of grains of sand that would be required to fill the known Universe, and found that it was no more than “one thousand myriad of the eighth numbers” (10^{63})….

The Largest Standard Dictionary Number, on date, is, Centillion ,10^{303.}

Tamil Classics name, 1,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,000 = MAHAYUGAM = Ten Undecillion = 10 ^{37.}

This is 10 steps later to Decillion.

That is adding the power.

The basic computation in a Language that is over 5000 Year old….?

Shall be posting on minute measurements in Tamil and on Large and smallest numbers in Vedic System.

Citation.

http://en.wikipedia.org/wiki/Tamil_units_of_measurement

http://en.wikipedia.org/wiki/Names_of_large_numbers