Largest n-digit semiprime.

Terms

a(0) =9a(1) =95a(2) =998a(3) =9998a(4) =99998a(5) =999997a(6) =9999998a(7) =99999997a(8) =999999991a(9) =9999999997a(10) =99999999997a(11) =999999999997