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A062578 Numbers n such that 12^n - 11^n is prime. 2
2, 3, 7, 89, 101, 293, 4463, 70067 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Terms greater than 1000 may correspond to unproven strong pseudoprimes.

LINKS

Table of n, a(n) for n=1..8.

PROG

(PARI) is(n)=ispseudoprime(12^n-11^n) \\ Charles R Greathouse IV, May 22 2017

CROSSREFS

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

Sequence in context: A288800 A247025 A053964 * A062529 A058443 A163152

Adjacent sequences:  A062575 A062576 A062577 * A062579 A062580 A062581

KEYWORD

nonn,hard

AUTHOR

Mike Oakes, May 18 2001, May 19 2001

EXTENSIONS

New term 70067 found by Jean-Louis Charton in 2006 corresponding to a probable prime with 75615 digits. Jean-Louis Charton, Sep 02 2009

Edited by M. F. Hasler, Sep 16 2013

STATUS

approved

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Last modified May 25 04:50 EDT 2019. Contains 323539 sequences. (Running on oeis4.)