On Leyland Primes
Let's call a prime p that can be written in the form p = x^y + y^x for integral x > y > 1 (or x=y=1 or x=2,y=1) a Leylandalpha prime.
Let's call a prime p that can be written in the form p = x^y  y^x > 0 for integral x,y a Leylandbeta prime.
Find primes p that can be expressed as both an Lalpha and Lbeta prime simultaneously (with different x,y).
Find primes p that can be expressed in at least two different ways as Lalpha or Lbeta primes (with different x,y).
I don't currently know if there are any.
Last fiddled with by davar55 on 20150117 at 19:23
