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A068694 Largest n-digit prime with all odd digits. 0
7, 97, 997, 9973, 99991, 999979, 9999991, 99999971, 999999937, 9999999557, 99999999977, 999999999959, 9999999999971, 99999999999973, 999999999999577, 9999999999999937, 99999999999999997, 999999999999999737 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

FORMULA

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

CROSSREFS

Cf. A068690, A068691, A068692, A068693.

Cf. A003618.

Sequence in context: A241206 A127892 A125590 * A158579 A003618 A173833

Adjacent sequences:  A068691 A068692 A068693 * A068695 A068696 A068697

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Mar 03 2002

EXTENSIONS

More terms from Sascha Kurz, Mar 17 2002

STATUS

approved

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Last modified April 20 23:46 EDT 2021. Contains 343143 sequences. (Running on oeis4.)