A101592 Smallest and largest of the n-digit primes.

2, 7, 11, 97, 101, 997, 1009, 9973, 10007, 99991, 100003, 999983, 1000003, 9999991, 10000019, 99999989, 100000007, 999999937, 1000000007, 9999999967, 10000000019, 99999999977, 100000000003, 999999999989, 1000000000039, 9999999999971, 10000000000037

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Chris K. Caldwell List of small primes.

Example

2 is the smallest 1-digit prime and 7 is the largest 1-digit prime.
100003 is the smallest 6-digit prime and 999983 is the largest 6-digit prime.

Mathematica

Table[{NextPrime[10^n], NextPrime[10^(n+1), -1]}, {n, 0, 15}]//Flatten (* Harvey P. Dale, Jun 04 2019 *)

Crossrefs

Cf. A003617, A003618

Sequence in context: A352762 A373124 A073623 * A349709 A135066 A085315

Adjacent sequences: A101589 A101590 A101591 * A101593 A101594 A101595

Keyword

nonn,base

Author

Parthasarathy Nambi, Jan 26 2005

Status

approved