

A062579


Numbers n such that 13^n  12^n is prime.


1



17, 31, 41, 47, 109, 163, 643, 2459, 9743, 30271, 87557
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OFFSET

1,1


COMMENTS

Terms greater than 1000 may correspond to (unproven) strong pseudoprimes 13^n  12^n. [Clarified by M. F. Hasler, Sep 16 2013]


LINKS

Table of n, a(n) for n=1..11.


PROG

(PARI) is(n)=ispseudoprime(13^n12^n) \\ Charles R Greathouse IV, Jun 12 2017


CROSSREFS

Cf. A000043, A057468, A059801, A059802, A062572A062666.
Sequence in context: A235920 A268923 A172287 * A134076 A258029 A321596
Adjacent sequences: A062576 A062577 A062578 * A062580 A062581 A062582


KEYWORD

nonn,hard


AUTHOR

Mike Oakes, May 18 2001, May 19 2001


EXTENSIONS

Two more terms 30271 and 87557 found by JeanLouis Charton in 2007 and 2008 corresponding to probable primes with 33721 and 97534 digits. JeanLouis Charton, Sep 02 2009


STATUS

approved



