(661|N)=(662|N)=(663|N)=-1 (17|N)=(53|N)=(73|N)=-1
pfgw 3-PRP, 17-PRP, 53-PRP, 73-PRP
pfgw -tc Fermat & Lucas PRP
PrimeForm (WinXP) PRP with a=5527,5531

To be completed...