LLR: (68*10^72120-23)/9 is base 3-Strong Fermat PRP! (72121 decimal digits) Time : 85.169 sec. (68*10^72120-23)/9 is strong-Fermat, Lucas and Frobenius PRP! (P = 5, Q = 2, D = 17) Time : 372.619 sec.
To be completed...