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A032632 Primes that are decimal concatenations of n with n + 9. 2
211, 1019, 1423, 2029, 2837, 3847, 4049, 5059, 5261, 5867, 6271, 6473, 7079, 8089, 8291, 100109, 104113, 110119, 112121, 118127, 122131, 124133, 142151, 148157, 160169, 164173, 170179, 172181, 178187, 188197, 194203, 208217 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..2500

MATHEMATICA

Select[Table[FromDigits[Flatten[IntegerDigits/@{n, n+9}]], {n, 250}], PrimeQ] (* Harvey P. Dale, May 12 2019 *)

CROSSREFS

Cf. A032614, A032624.

Sequence in context: A137770 A142761 A104299 * A241959 A179595 A137872

Adjacent sequences:  A032629 A032630 A032631 * A032633 A032634 A032635

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, May 15 1998

EXTENSIONS

Edited by Charles R Greathouse IV, Apr 30 2010

STATUS

approved

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Last modified June 16 11:12 EDT 2019. Contains 324152 sequences. (Running on oeis4.)