

A108326


Integers n such that 10^n17 is prime.


0



2, 3, 6, 30, 40, 86, 128, 264, 639, 912, 1932, 4650, 5038, 7410, 19041
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OFFSET

1,1


COMMENTS

Terms 639 and 912 correspond to certified primes (Primo 2.2.0 beta).  Ryan Propper, Jul 12 2005
No other terms < 40000.
See Kamada link  primecount.txt for terms, primesize.txt for discovery details including probable or proved primes  search on "99983".
No other terms < 100,000.  Robert Price, Mar 03 2011


LINKS

Table of n, a(n) for n=1..15.
Makoto Kamada, List of nearrepdigitrelated prime numbers.
Index entries for primes involving repunits.


EXAMPLE

If n = 3 we have 10^317 = 100017 = 983, which is prime.


CROSSREFS

Cf. A089675, A095714, A092767.
Sequence in context: A277809 A051717 A192441 * A002234 A074005 A145499
Adjacent sequences: A108323 A108324 A108325 * A108327 A108328 A108329


KEYWORD

more,nonn


AUTHOR

Julien Peter Benney (jpbenney(AT)ftml.net), Jun 30 2005


EXTENSIONS

a(14)a(15) from Robert Price, Dec 11 2010
Edited by Ray Chandler, Dec 23 2010


STATUS

approved



