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A062578
Numbers k such that 12^k - 11^k is prime.
2
2, 3, 7, 89, 101, 293, 4463, 70067
OFFSET
1,1
COMMENTS
Terms greater than 1000 may correspond to unproven strong pseudoprimes.
PROG
(PARI) is(n)=ispseudoprime(12^n-11^n) \\ Charles R Greathouse IV, May 22 2017
KEYWORD
nonn,hard
AUTHOR
Mike Oakes, May 18 2001, May 19 2001
EXTENSIONS
New term 70067 (found in 2006) from Jean-Louis Charton, Sep 02 2009
Edited by M. F. Hasler, Sep 16 2013
STATUS
approved