For most of the vehicles there seems to be a correlation between size and "banana number", which is not yet a SI-recognized unit of measure (And I really hope they don't decide to keep a reference banana in a vault in France along with the now disused kilogram).

Looking at the numbers, the repeating digits of "54", "45", "09" strongly suggest a mathematical conversion involving a factor of $\frac{1}{11}$ in the process. Applying this to the Vulcan number gives us 30529998 - precisely the volume in centiliter - or cubic meter multiplied by 100,000.


$$\rm{Bananas} = \rm{Volume} / 11 \cdot 100000$$

There are two numbers that don't fit:

* For SLS Block 1b, the first digit is wrong and should be a 8 instead of 9.
* For SLS Block 1A, the number is a plain copy of that of New Glen and should read 2345454 instead.

If that implies that the average banana has a volume of about 91 ml - unlikely. What I'd call a fairly normal banana (sample size 1 from my fruit basket) has a weight of 160 g and barely floats, so has a volume of close to 200 ml.