The paging on the new global search is ... off ...
When I search for
test, it promises me 3,332,097 results, which would lead to 111069 pages:
However, when I click on the last page button 111069, the number of search results is reduced to 2,698,280 (89942 pages):
As @Catija mentions, it looks like the default is 15 results per page, and not 30 as indicated by the highlight.