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A062632
Numbers k such that 66^k - 65^k is prime.
0
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
PROG
(PARI) is(n)=ispseudoprime(66^n-65^n) \\ Charles R Greathouse IV, Jun 13 2017
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