OFFSET
1,1
COMMENTS
There are only thirty prime numbers which meet the criteria.
The largest prime in this sequence happens, as noted by Farideh Firoozbakht, to have the property pi(5849) = (pi(5)*pi(8)*pi(4)*pi(9)) * (pi(pi(5))*pi(pi(8))*pi(pi(4))*pi(pi(9)), where pi = A000720. Note that 5849 is the earliest multi-digit prime with this property. - Jonathan Vos Post, Jun 30 2014
LINKS
Prime Curios, 5849
EXAMPLE
541 (prime) -> 145, 154, 415, 451, 514 (all nonprime).
MAPLE
with(combinat):
T:= n-> sort(map(h-> h[], select(z-> nops(z)=1,
map(x-> map(y-> select(isprime, parse(cat(y[]))),
permute(x)), choose([$1..9], n)))))[]:
seq(T(n), n=1..4); # Alois P. Heinz, Jun 29 2014
MATHEMATICA
nrdQ[n_]:=Module[{idn=IntegerDigits[n]}, FreeQ[idn, 0]&&Length[Union[idn]] == Length[idn]&&Count[FromDigits/@Permutations[idn], _?PrimeQ]==1]; Select[ Prime[ Range[800]], nrdQ] (* Harvey P. Dale, Apr 27 2018 *)
CROSSREFS
KEYWORD
nonn,base,fini,full
AUTHOR
Andreas Boe, Jun 29 2014
STATUS
approved