I search PRPs of the form y^x-x^y.

I made a webpage to these PRPs, you can find the page at

http://primfakt.atw.hu/
Andrey Kulsha's site contains y^x+x^y PRPs, the URL is:

http://www.primefan.ru/xyyxf/primes.html
y^x-x^y PRPs exists much more than y^x+x^y PRPs.

For example to x= 5000 894 y^x-x^y and 426 y^x+x^y PRPs,

x=10000 1530 y^x-x^y and 787 y^x+x^y PRPs.

I have all the y^x-x^y PRPs to x=10800, and a few for higher x values.

Are you interesting to join me searching the y^x-x^y PRPs?