I came across this definition of 正{せい} and I can't fathom what purpose such a large number (10,000,000,000,000,000,000,000,000,000,000,000,000,000) could serve, it looks strange to me that there is even a particular kanji to represent it.

Do you know if there is any context or use for it?

How did 正 come to mean 10^40?



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