A062632 Numbers k such that 66^k - 65^k is prime.

2, 7, 47, 61, 73, 317, 4447, 32749, 72047, 99581

Offset

1,1

Comments

Terms greater than 1000 are often only strong pseudoprimes.

a(11) > 10^5. - Robert Price, Sep 03 2013

Links

Table of n, a(n) for n=1..10.

Prog

(PARI) is(n)=ispseudoprime(66^n-65^n) \\ Charles R Greathouse IV, Jun 13 2017

Crossrefs

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

Sequence in context: A111842 A247883 A027458 * A116892 A201481 A054555

Adjacent sequences: A062629 A062630 A062631 * A062633 A062634 A062635

Keyword

nonn,hard

Author

Mike Oakes, May 18 2001, May 19 2001

Extensions

a(8)-a(10) (Computed by Adam Marciniec) from Robert Price, Sep 03 2013

Status

approved