Listed on Makoto Kamada s site: http://hpcgi2.nifty.com/m_kamada/f/phin10.cgi?p=203#P20233

Primality testing Phi(20233,10)/4797891757/550721298613 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N-1 test using base 11
Running N-1 test using base 13
Running N-1 test using base 19
Running N+1 test using discriminant 29, base 1+sqrt(29)
Calling N+1 BLS with factored part 0.04% and helper 0.03% (0.15% proof)
Phi(20233,10)/4797891757/550721298613 is Fermat and Lucas PRP! (829.4387s+0.0027s)

To be completed...