proposition: Lemma prime19913 : prime 19913.
proof: Proof. apply (Pocklington_refl (Pock_certif 19913 3 ((19, 1)::(2,3)::nil) 1) ((Proof_certif 19 prime19) :: (Proof_certif 2 prime2) :: nil)). enc (refl_equal true). Qed.
imports: List ZArith Coqprime(ZCAux) Pock