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A215538 Numbers n such that 101^n - 100^n is prime. 2
43, 59, 661, 1597, 3853, 6073, 7723, 12097 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Terms found by Mike Oakes. No more term <= 10000.

LINKS

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

MATHEMATICA

Select[Prime[Range[PrimePi[1000]]], PrimeQ[101^# - 100^#] &] (* T. D. Noe, Aug 15 2012 *)

PROG

(PARI) is(n)=ispseudoprime(101^n-100^n) \\ Charles R Greathouse IV, Jun 06 2017

CROSSREFS

Sequence in context: A201613 A115404 A033223 * A235149 A064508 A102540

Adjacent sequences:  A215535 A215536 A215537 * A215539 A215540 A215541

KEYWORD

nonn,hard

AUTHOR

Jean-Louis Charton, Aug 15 2012

EXTENSIONS

a(8) from Tim Johannes Ohrtmann, Jan 28 2018

STATUS

approved

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Last modified June 18 18:52 EDT 2019. Contains 324215 sequences. (Running on oeis4.)