Mountain accessibility database

This page illustrates the remoteness or accessibility of major mountain peaks of the world. The basic idea is that mountains close to population centers should be generally more accessible and hence more popular for hikers and climbers than the ones in the middle of nowhere. Only numeric information from databases is used to arrive at an educated guess for which mountains might be more visited than others. Obviously, individual circumstances can introduce wild swings and make some peak more or less popular in real life, but I'm choosing to ignore the factors that cannot be easily added to a calculation. Of course, if you have suggestions for additional factors, you can let me know.
The mountain selection is from the ultra prominent peaks; I have combined this info with the populated places index from GeoNames.
The table is fully sortable, click on column headers to explore. The table is rather large and uses javascript for sorting, so it can take a few seconds.

Legend:
Prominence - topographic prominence
Settlement columns - nearest populated places to the peak that have more than a given number of people.
Population columns - how many people live in the given radius from the peak.
Accessibility score - every populated place contributes an accessibility score to a peak. The formula for that is population^0.6/(distance+5)⁴. Total accessibility score of a peak is the sum of all individual scores.
Challenge score - mountain's altitude multiplied by a "latitude factor" (usually between 1-2) that gives more weight to mountains at high latitudes. If the peak has a settlement high on its slopes, it receives a discount.
Attraction score - Altitude+Prominence, optionally multiplied by a "high point factor" (5 (three stars) for continent high points, 3 (two stars) for country high points, 2 (one star) for state/province high points - USA and Canada only at the moment).
Expected popularity - 10 * accessibility score^0.25 * attraction score / challenge score.
Access points - top 5 populated places with their populations that contribute to the accessibility score. These are usually places near the mountain, but for very remote locations they are more often major cities that could be used to start an expedition.

All distances are given in kilometers and all altitudes in meters. All formulas are constructed by trial and error, based on what seemed to give best results :)
You can send corrections and ideas to targot (at) gmail (dot) com.