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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: A127892 A389727 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 12 21:33 EDT 2026. Contains 394621 sequences.
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