1,1
There are exactly 16 five-digit primes using decimal digits 0-to-4 exactly once. There are exactly 2668 eight-digit primes using digits 0-to-7 exactly once: A109177 (smallest ones), A109178 (largest ones).
Cf. A109177, A109178.
Sequence in context: A031987 A074671 A156119 * A157735 A187311 A204691
Adjacent sequences: A109173 A109174 A109175 * A109177 A109178 A109179
base,nonn
Zak Seidov (zakseidov(AT)yahoo.com), Jun 21 2005