Quote:
Originally Posted by Batalov
Anyway, let's redefine XYminusYX prime as a prime p = x^y  y^x, 1 < x < y. (D.Johnson, H.Lifchitz and recently N.Schneider were collecting them for years.)

Thanks for that link.
Since the New Year I've been factoring x^yy^x < 2^1024 where 1<x<y. There are 17289 of them, including the two special cases of 2^33^2 and 2^44^2. Right now 8948 of them remain unfactored.
Factors are still showing up at the rate of about 150 per day. Once the rate settles down a little I'll make the tables available and invite others to contribute  some time in February I guess.
Paul