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 Th6:
  5|^10+1 = 9765*1000+626 :: 9 765 626
  proof
    thus 5|^10+1 = 5*5*5*5*5*5*5*5*5*5+1 by NUMBER02:6
    .= 9765*1000+626;
  end;
