A104291 Primes which are the reverse concatenation of two consecutive Fibonacci numbers.

11, 53, 2113, 14489, 25841597, 832040514229, 45170904956503918714087129372791715456571051233611642553, 5412222237103765877667657957123376148335120669380949733449372971981195681356806732944396691005381570580873

Offset

1,1

Links

Table of n, a(n) for n=1..8.

Example

The second term is 53 which is a prime and is the reverse concatenation of 3 and 5 which are two consecutive Fibonacci numbers.

Mathematica

Select[#[[2]]*10^IntegerLength[#[[1]]]+#[[1]]&/@Partition[Fibonacci[Range[500]], 2, 1], PrimeQ] (* Harvey P. Dale, Sep 01 2024 *)

Crossrefs

Cf. A000045.

Sequence in context: A196468 A252833 A227255 * A172495 A003867 A059135

Adjacent sequences: A104288 A104289 A104290 * A104292 A104293 A104294

Keyword

base,nonn

Author

Shyam Sunder Gupta, Apr 17 2005

Status

approved