reserve a,b,i,k,m,n for Nat;
reserve s,z for non zero Nat;
reserve r for Real;
reserve c for Complex;
reserve e1,e2,e3,e4,e5 for ExtReal;

theorem Th5:
  4|^10+1 = 1048*1000+577 :: 1 048 577
  proof
    thus 4|^10+1 = 4*4*4*4*4*4*4*4*4*4+1 by NUMBER02:6
    .= 1048*1000+577;
  end;
