A089771 Largest n-digit prime containing no prime substrings, or 0 if no such prime exists.

7, 89, 991, 9949, 99469, 996649, 9999481, 99990091, 999996901, 9999988049, 99999981469, 999999946849, 9999999946009, 99999999904081, 999999999946069, 9999999999944869, 99999999999884081, 999999999999984469

Offset

1,1

Comments

Conjecture: No term is zero.

Links

Table of n, a(n) for n=1..18.

Crossrefs

Cf. A089768, A033274, A089770.

Sequence in context: A068877 A121044 A107109 * A249448 A069661 A069662

Adjacent sequences: A089768 A089769 A089770 * A089772 A089773 A089774

Keyword

base,nonn

Author

Amarnath Murthy, Nov 23 2003

Extensions

More terms from David Wasserman, Oct 12 2005

Status

approved