A062656 - OEIS

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A062656

Numbers k such that 90^k - 89^k is prime.

0

2, 109, 229, 6959

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Terms greater than 1000 are often only strong pseudoprimes.

LINKS

Table of n, a(n) for n=1..4.

PROG

(PARI) is(n)=ispseudoprime(90^n-89^n) \\ Charles R Greathouse IV, Jun 13 2017

CROSSREFS

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

Sequence in context: A245056 A023281 A042457 * A173372 A323250 A077804

Adjacent sequences: A062653 A062654 A062655 * A062657 A062658 A062659

KEYWORD

nonn,hard

AUTHOR

Mike Oakes, May 18 2001, May 19 2001

STATUS

approved