theorem
  1105 divides 3|^1105-3
  proof
A1: 1105 = 5*13*17;
    5,13,17 are_mutually_coprime by PEPIN:59,60,NAT_4:28,INT_2:30;
    hence thesis by A1,Th57,Th58,Th59,Th12;
  end;
