A108330 Integers k such that 10^k - 29 is a prime number.

2, 3, 5, 7, 8, 13, 14, 761, 794, 2216, 3710, 3860, 3937, 5091, 7754, 29091

Offset

1,1

Comments

The next term, if one exists, is > 100000. - Robert Price, Apr 25 2011

See Kamada link - primecount.txt for terms, primesize.txt for discovery details including probable or proved primes - search on "99971".

Links

Table of n, a(n) for n=1..16.

Makoto Kamada, List of near-repdigit-related prime numbers.

Index entries for primes involving repunits.

Example

k = 8 is a term because 10^8 - 29 = 100000000 - 29 = 99999971, which is prime.

Crossrefs

Cf. A089675, A095714, A092767.

Sequence in context: A028756 A028799 A080435 * A262587 A328724 A039892

Adjacent sequences: A108327 A108328 A108329 * A108331 A108332 A108333

Keyword

nonn,more

Author

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

Extensions

a(14)-a(15) from Sean A. Irvine, Mar 04 2010

a(16) from Robert Price, Dec 15 2010

Edited by Ray Chandler, Dec 23 2010

Status

approved