I cannot find MonoDevelop.exe,I cannot find Monodevelop

Whenever I try to open a script to edit it opens a notepad. I have gone into Edit>Preferences but there is no option to use MonoDevelop as the default. I looked through the files of Unity in Local Disk (C:)/Programs/Unity and there is no MonoDevelop.exe. I've downloaded Microsoft.NET and the Gtk# and I even downloaded MonoDevelop from their website. Somehow there is still no MonoDevelop.exe. I have uninstalled and reinstalled Unity several times and ran the Installer as an Administrator and still there is no Monodevelop. I'm very, very confused and could use some help.,Whenever I try to open a script in the Unity Editor it pulls up a Notepad. When i went to Edit>Preferences there was no option in the dropdown to use Monodevelop as the default. I've uninstalled and reinstalled Unity, I've installed Windows.Net and the #GTX thing, I've even installed MonoDevelop and there is no MonoDevelop.exe. I'm very confused and can't seem to find it anywhere.