It is another prefix recently adopted by the International System, along with Quetta and Ronna for multiples and quecto and ronto for submultiples. They are represented as follows: Queta as Q, Ronna as R, Quecto as q and ronto as r. In this case Ronna means or indicates a factor of 10 (raised to 27 power) and is called a thousand-trillion, in the Long Scale) and is used for multiples or infinitely large parts. It is a 10 followed by 27 zeros. Ronna (symbol R) is a prefix adopted by Sistema Internacional in 2022. It is clarified that in the Short Scale used by Spanish-speaking countries the Ronna would be called 1 Octillion (because our system uses 3 zeros less).
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