Someone had shared the quirk with me and said they were able to find the text in news articles (though dating from 13 August 2003), which may explain the dependence on country.
For example, I searched for one long phrase in quotes and it only appears in a one place on the English language web. (2003) [0]
Another phrase appears in this news article. (2001) [1]
None of these things are related to mathematics, and are not nonsense.
Does this IPv6 prefix looking string mean anything? [2002:ae0:dd6e::]:3400
[0] https://www.yorkpress.co.uk/news/7943515.o-roy-you-left-me-c...
[1] https://www.theboltonnews.co.uk/news/5895388.no-parking-fee-...
I suspect if you look at the unexpected text, you'll find it'll be pretty close to a power of two or attributable to a single bit error in whatever processor logic that calculated it.
Half halfheartedly, I was guessing it was something like a rare multi cosmic ray bitflip or something.
From your link:
> Today, many Google Cloud services contain such checks, thus preventing SDC errors from permanently corrupting customer or system data.
It's interesting that it can still happen from one bit in a system like Google's storage for search. I guess that would probably be expensive?