A087344 Smallest prime formed by concatenating n consecutive Fibonacci numbers.

2, 11, 5813, 1123, 235813, 67989163763861225811000877783661019311779979416004714189288006719437081612046600466103755303097540113804746346429

Offset

1,1

Comments

The next term has 630 digits. - Harvey P. Dale, Jun 15 2011

Links

Table of n, a(n) for n=1..6.

Example

a(3) = 5813 because 5813 is the smallest prime formed from concatenation of 3 consecutive Fibonacci numbers, namely 5, 8, and 13.

Mathematica

With[{fibs=Fibonacci[Range[800]]}, Table[First[Select[ FromDigits[ Flatten[ IntegerDigits[#]]]& /@ Partition[ fibs, n, 1], PrimeQ]], {n, 7}]] (* Harvey P. Dale, Jun 15 2011 *)

Crossrefs

Cf. A087345.

Sequence in context: A072665 A201264 A342996 * A290873 A291263 A226072

Adjacent sequences: A087341 A087342 A087343 * A087345 A087346 A087347

Keyword

base,nonn

Author

Amarnath Murthy, Sep 06 2003

Extensions

Corrected and extended by Shyam Sunder Gupta, Apr 17 2005

Status

approved