Increasing the num=100000 argument doesn't seem to impact this limit.
One would think that your search history should be a core part of their data liberation effort.
https://www.google.com/history/lookup?month=11&day=30...
It shouldn't be too hard to write a script to scrape you're whole history...
https://gist.github.com/1884821
export.rb:1:in `require': no such file to load -- mechanize (LoadError) from export.rb:1
edit: nvm, installed libwww-mechanize-ruby and it's working fine.
Increasing the num=100000 argument doesn't seem to impact this limit.
One would think that your search history should be a core part of their data liberation effort.