Definition of a factorion:
The calculator returns a list of factorions up to the limit input by the user.
The limit is based solely on your patience. A limit of 100,000,000 takes about 20 seconds to calculate. Of course, the largest possible factorion is less than 99,999,999 as 8 X 9! = 2,903,040. Further digits do not grow fast enough as 9! < 1,000,000.
Reload the browser window/tab between calculations if you don't want successive calculations appended.