proposition: Lemma prime20507 : prime 20507.
proof: Proof. apply (Pocklington_refl (Pock_certif 20507 2 ((10253, 1)::(2,1)::nil) 1) ((Proof_certif 10253 prime10253) :: (Proof_certif 2 prime2) :: nil)). enc (refl_equal true). Qed.
imports: List ZArith Coqprime(ZCAux) Pock