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1,1

There are exactly 2668 eight-digit primes using digits 0-to-7 exactly once: here the smallest ones are given; cf. A109178 with the largest ones.

Harvey P. Dale, Table of n, a(n) for n = 1..2668

Take[FromDigits/@Select[Permutations[Range[0, 7]], First[#]!=0&&PrimeQ[ FromDigits[ #]]&], 50] (* Harvey P. Dale, Aug 16 2011 *)

Cf. A109178.

Sequence in context: A235696 A074665 A235160 * A109179 A030093 A188755

Adjacent sequences: A109174 A109175 A109176 * A109178 A109179 A109180

base,nonn

Zak Seidov, Jun 21 2005

approved