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1.
At one point it was the largest possible measurement for bytes. One brontobyte is 1024^9 or 1237940039285380274899124224 bytes. Or simply a 1 followed by 27 digits. (Not zeroes)

Recently adopted was the Geopbyte, which is 1024^10 or 1267650600228229401496703205376 bytes and is now the largest measurement of virtual storage.
You might need a brontobyte computer in order to download everything on the internet.
by Clawdya Windwalker August 14, 2011
 
2.
the largest possible measurement for bytes. one brontobyte is 1,000,000,000,000,000,000,000,000,000 bytes. 1 followed by 27 zeros. that number is more than the number of all the cells of the human body in each person living in Indiana and then some.
You would need a brontobyte computer in order to download everything on the internet.
by Pillz Thompson May 02, 2008