A062650 - OEIS

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A062650

Numbers k such that 84^k - 83^k is prime.

2, 41, 67, 7699, 12409

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Terms greater than 1000 are often only strong pseudoprimes.

a(6) > 20000. - Derek Orr, Sep 22 2014

a(6) > 10^5. - Robert Price, Mar 05 2015

LINKS

Table of n, a(n) for n=1..5.

PROG

(PARI) is(n)=ispseudoprime(84^n-83^n) \\ Charles R Greathouse IV, Jun 13 2017

CROSSREFS

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

Sequence in context: A158084 A243990 A141858 * A107174 A041199 A100514

Adjacent sequences: A062647 A062648 A062649 * A062651 A062652 A062653

KEYWORD

nonn,hard,more

AUTHOR

Mike Oakes, May 18 2001, May 19 2001

EXTENSIONS

a(5) from Derek Orr, Sep 22 2014

STATUS

approved