A115347 Fibonacci primes that are also primes when their digits are reversed.

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).

Links

Table of n, a(n) for n=1..5.

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

Adjacent sequences: A115344 A115345 A115346 * A115348 A115349 A115350

Keyword

nonn,base

Author

Harvey P. Dale, Mar 07 2006

Status

approved