Here is a Numberphile video [1] that explains - at the very end - why this database was put together.<p>[1] <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=VTveQ1ndH1c" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=VTveQ1ndH1c</a>