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A168499 Primes n of the form 100p+q with primes p and q, 98>p>q>10. 4
1913, 2311, 2917, 3119, 3719, 4111, 4129, 4337, 4723, 4729, 5323, 5347, 5923, 5953, 6113, 6131, 6143, 6719, 6737, 6761, 7129, 7159, 7331, 7919, 7937, 8311, 8317, 8329, 8353, 8923, 8929, 8941, 8971, 9719, 9743, 9767 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Or, primes that are concatenation of two 2-digit primes 98>p>q>10.

There are exactly 36 such primes.

LINKS

Table of n, a(n) for n=1..36.

MATHEMATICA

Sort[Select[100Last[#]+First[#]&/@Subsets[Prime[Range[5, 25]], {2}], PrimeQ]] (* Harvey P. Dale, Aug 19 2013 *)

PROG

(PARI) is(n)=isprime(n) && isprime(n\100) && isprime(n%100) && n<9768 \\ Charles R Greathouse IV, Jun 08 2015

CROSSREFS

Sequence in context: A186789 A229390 A072274 * A230083 A069567 A163678

Adjacent sequences:  A168496 A168497 A168498 * A168500 A168501 A168502

KEYWORD

fini,full,nonn,base,easy

AUTHOR

Zak Seidov, Nov 27 2009

STATUS

approved

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Last modified April 7 19:46 EDT 2020. Contains 333306 sequences. (Running on oeis4.)