Prime anagrams

[zak seidov]

--- hv at crypt.org wrote:

> 
> Here's some numbers I calculated:
> 
>  n a(n)    b(n) c(n)    d(n)
> ============================
>  1    1       2    1       2
>  2    2      13    2      13
>  3    4     149    4      17
>  4   11    1237   11    1237
>  5   39   13789   39   13789
>  6  148  123479  160   13789
>  7  731 1235789  738  123479
...8...?......?.............
...9...0....................
wihout zero, there is no 9d pandigit prime :)

> 
> n = number of digits; a(n) = maximal number of
> permutations that are prime;
> b(n) = smallest prime example of a(n); c(n) = a(n)
> but allowing leading zero
> digits; d(n) = smallest prime example of c(n).
<................>
> 
> Hugo V.
> 
Zak

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