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A032630 Primes that are concatenations of n with n + 7. 1
29, 613, 2027, 2633, 3037, 3643, 4451, 6067, 6269, 6673, 7481, 8087, 8693, 10041011, 10341041, 10461053, 10861093, 10941101, 11041111, 11361143, 11421149, 11941201, 12001207, 12061213, 12141221, 12241231, 12501257 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

MATHEMATICA

Select[Table[FromDigits[Join[IntegerDigits[n], IntegerDigits[n+7]]], {n, 1500}], PrimeQ] (* Harvey P. Dale, Sep 20 2016 *)

CROSSREFS

Cf. A032612, A032622.

Sequence in context: A103723 A287050 A142521 * A014929 A006136 A199038

Adjacent sequences:  A032627 A032628 A032629 * A032631 A032632 A032633

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, May 15 1998

EXTENSIONS

Edited by Charles R Greathouse IV, Apr 28 2010

STATUS

approved

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Last modified June 20 05:01 EDT 2019. Contains 324229 sequences. (Running on oeis4.)