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A173851 Primes of the form 10^n+2*n-1. 2
11, 103, 10007, 10000000019, 100000000000000000039, 100000000000000000000000000000000069 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..12

MATHEMATICA

Select[Table[10^n + 2 n - 1, {n, 400}], PrimeQ] (* Vincenzo Librandi, Jan 03 2014 *)

PROG

(MAGMA) [a: n in [1..100] | IsPrime(a) where a is 10^n+2*n-1]; // Vincenzo Librandi, Jan 03 2014

CROSSREFS

Cf. A174175.

Sequence in context: A287833 A155594 A077250 * A295840 A158470 A163933

Adjacent sequences:  A173848 A173849 A173850 * A173852 A173853 A173854

KEYWORD

nonn

AUTHOR

Vincenzo Librandi, Feb 26 2010

STATUS

approved

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Last modified January 19 12:36 EST 2020. Contains 331049 sequences. (Running on oeis4.)