A215538 Numbers n such that 101^n - 100^n is prime.

43, 59, 661, 1597, 3853, 6073, 7723, 12097

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