Re:Superpermutations
by teraflop on Monday October 22, 2018 @02:23AM
(#18272578)
I think you must be misremembering; if you dial a sequence of 153 digits, you can't possibly test more than 149 different 5-digit substrings.
[ Parent
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Possibly. It was 20 years ago. I'm reconstructing via my (possibly flawed) understanding of the linked article. (My vague recollection was something like 250 digits for a 4-digit passcode.)
And I just realized I mistakenly conflated 5-digit permutations of 5 digits with 5-digit passcodes of 10 digits. Whoops.
Why not just re-read RISKS?
* https://catless.ncl.ac.uk/Risks/7/69#subj5.1