A068694 Largest n-digit prime with all odd digits.

7, 97, 997, 9973, 99991, 999979, 9999991, 99999971, 999999937, 9999999557, 99999999977, 999999999959, 9999999999971, 99999999999973, 999999999999577, 9999999999999937, 99999999999999997, 999999999999999737

Offset: 1

Author

Amarnath Murthy, Mar 03 2002

Keywords

• base
• nonn

Crossrefs

Cf. A068690, A068691, A068692, A068693.

Cf. A003618.

Formula

a(n)<=A003618(n). - R. J. Mathar, May 18 2007

Extensions

More terms from Sascha Kurz, Mar 17 2002