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2022 ...

https://www.bipm.org/en/cgpm-2022/resolution-3

Interesting never the less.

https://en.m.wikipedia.org/wiki/Metric_prefix

In case you wondered where they came in the list like I immediately did:

• quetta Q 10^30
• ronna R 10^27
• yotta Y 10^24
• zetta Z 10^21
• exa E 10^18
• peta P 10^15
• tera T 10^12
• giga G 10^9
• mega M 10^6
• kilo k 10^3
• hecto h 10^2
• deca da 10^1
• ——
• deci d 10^−1
• centi c 10^−2
• milli m 10^−3
• micro μ 10^−6
• nano n 10^−9
• pico p 10^−12
• femto f 10^p−15
• atto a 10^−18
• zepto z 10^−21
• yocto y 10^−24
• ronto r 10^−27
• quecto q 10^−30

You can combine these to have perfectly valid ways of saying 1.

I'll have ronnaronto cheeseburger.

My favorite prefix will always be exa. Mostly because of a sci-fi book where one character called himself Exa and there were a few subtle puns with that name (like getting obliterated with a 10^18 W laser)

1/R = r

lovely

I'm hella disappointed