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A177489 Primes of the form (13*10^n+17)/3 0
439, 4339, 4333339, 433333333339, 4333333333333339, 433333333333333333333333339, 43333333333333333333333333339, 4333333333333333333333333333333333333333333333333339 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The next term has 151 digits. [From Harvey P. Dale, Aug 09 2011]

LINKS

Table of n, a(n) for n=1..8.

MATHEMATICA

Select[(13 10^Range[180]+17)/3, PrimeQ] (* Harvey P. Dale, Aug 09 2011 *)

PROG

(MAGMA) [a: n in [0..250]|IsPrime(a) where a is (13*10^n+17)div(3)]

CROSSREFS

Cf. A102990

Sequence in context: A252135 A157737 A061328 * A210205 A092048 A296905

Adjacent sequences:  A177486 A177487 A177488 * A177490 A177491 A177492

KEYWORD

nonn

AUTHOR

Vincenzo Librandi, Dec 11 2010

STATUS

approved

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Last modified September 30 18:12 EDT 2020. Contains 337440 sequences. (Running on oeis4.)