The synthetic bacteria contain a shorter genetic code with 57 codons rather than 64, freeing up space for further edits that might lead to new drugs or virus-resistant microbes ...

The recoded bacterium uses only 57 of the 64 possible genetic codes, freeing up seven to be used for different purposes ...

Hmmm, 64 bit code is a little larger than 32 bit code (for AMD64 vs x86) as there is a prefix byte for 64-bit instructions. On the other hand the extra registers in AMD64 often counteract this ...