Quecto, Ronna: Meet the Newest Metric Prefixes (Gizmodo)

Gizmodo: Quecto, Ronna: Meet the Newest Metric Prefixes. “Four new metric prefixes got the official stamp of approval last week at the 27th General Conference on Weights and Measures held at Versailles, the extravagant palace outside of Paris…. The new prefixes ronna and quetta refer to the largest numbers, while ronto and quecto apply to the smallest. Ronna is a 1 followed by 27 zeroes, and quetta is a 1 followed by 30 zeroes. Ronto is 10^-27, and quecto equates to 10^-30.”