A062651 Numbers k such that 85^k - 84^k is prime.

179, 479

Offset

1,1

Comments

Terms greater than 1000 are often only strong pseudoprimes.

a(3) > 10^5. - Robert Price, Mar 26 2015

Links

Table of n, a(n) for n=1..2.

Prog

(PARI) is(n)=ispseudoprime(85^n-84^n) \\ Charles R Greathouse IV, Jun 13 2017

Crossrefs

Cf. A000043, A057468, A059801, A059802, A062572-A062666.

Sequence in context: A063350 A094492 A162163 * A142611 A283921 A120821

Adjacent sequences: A062648 A062649 A062650 * A062652 A062653 A062654

Keyword

nonn,hard,bref

Author

Mike Oakes, May 18 2001, May 19 2001

Status

approved