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A178438
Numbers n such that 10^n - 83 is prime.
0
2, 6, 16, 42, 47, 62, 109, 191, 221, 509, 3671, 4229, 4886, 6967, 12086
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 "99917".
EXAMPLE
10^6 - 83 = 999917 which is a prime number.
MATHEMATICA
nMax=1000; Do[If[PrimeQ[10^n-83], Print[n]], {n, nMax}]
PROG
(PARI) is(n)=ispseudoprime(10^n-83) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
Sequence in context: A276359 A158920 A263592 * A365548 A143123 A102699
KEYWORD
more,nonn
AUTHOR
Robert Price, Dec 21 2010
EXTENSIONS
Example corrected by Patrick De Geest, Nov 28 2014
STATUS
approved