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A062650 Numbers k such that 84^k - 83^k is prime. 0
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

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Last modified June 4 12:46 EDT 2024. Contains 373098 sequences. (Running on oeis4.)