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A115347
Fibonacci primes that are also primes when their digits are reversed.
2
2, 3, 5, 13, 1597
OFFSET
1,1
COMMENTS
There are no other numbers that qualify through the 10000th Fibonacci number (which has 2,090 digits).
EXAMPLE
13 is the 7th Fibonacci number. It is prime and its reversal, 31, is also prime.
MATHEMATICA
Select[Fibonacci[Range[10000]], PrimeQ[ # ]&&PrimeQ[FromDigits[Reverse[IntegerDigits[ # ]]]]&]
CROSSREFS
Cf. A000045.
Sequence in context: A041639 A006985 A042907 * A173654 A370850 A126333
KEYWORD
nonn,base
AUTHOR
Harvey P. Dale, Mar 07 2006
STATUS
approved