Smallest and largest of the n-digit primes.

Terms

a(0) =2a(1) =7a(2) =11a(3) =97a(4) =101a(5) =997a(6) =1009a(7) =9973a(8) =10007a(9) =99991a(10) =100003a(11) =999983a(12) =1000003a(13) =9999991a(14) =10000019a(15) =99999989a(16) =100000007a(17) =999999937a(18) =1000000007a(19) =9999999967a(20) =10000000019a(21) =99999999977a(22) =100000000003a(23) =999999999989